Answer:
When animals immigrate into another breeding population they may bring with then alleles that are rare or unknown in the population they breed into.
Explanation:
Gene flow is the movement of genes from one population to another population. Examples of this include a bee carrying pollen from one flower population to another, or a caribou from one herd mating with members of another herd. Genes can come in different forms called alleles.
Also, I didn't see the list of choices.
Gene flow involves the movement of gene and it's variant from one location to another.
What is gene flow?This is the movement of gene from a place in a population to another population.
The movement can be due to migration or mutation that can lead to transfer of a gene from one individual to another.
Therefore, gene flow involves the movement of gene and it's variant from a place to another.
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Which situation describes parasitism?
O
A. Vegetables grow in a garden frequented by many rabbits.
) B. Ants feed on aphid wastes and protect the aphids from predators.
O
C. A bear catches and eats a salmon from a stream.
O
D. Ticks live on and drink blood from a cow.
SUBMIT
Answer:
D. Ticks live on and drink blood from a cow.
This is an example of parasitism, where the ticks (parasite) are living off of the blood of the cow, the host animal.
Explanation:
Parasitism is a relationship between organisms. In this relationship, one organism (parasite) lives on or in another organism (host) and gains benefits from the host, causing it some harm.
Parasites are classified as ectoparasites, which live on the body surface of the host (ticks, fleas, leeches, and lice) and endoparasites, which live in the body of the host. Endoparasites are either intercellular, which live inside the host’s body (round worms, tapeworms) or intracellular, which live inside the cells in the host’s body (bacteria or viruses).
Parasites help to control dominant species and has a role in evolution by transferring genetic material between species.
Answer:
Ticks live on and drink blood from a cow
Explanation:
The only feed on cow and the cow gain nothing in return. That is parasitic
In what ways are natural resources used to make to make people’s lives more comfortable?
Answer:
Many ways. For one, we refine oil to make diesel to power semi trucks to take our goods long distances having the sophisticated logistics network that we do. We use jet fuel based on oil to fly us places that would otherwise take days to get to, in hours. We use geothermal heat, coal, and natural gas for electricity to power just about everything that uses electricity. We use this electricity to power air conditioning (very comfortable). Trees to make homes. We use everything for everything. Anything that makes your life comfortable was made from a resource on Earth. That's the simplest way to put it.
Explanation:
Facts.
Answer:
they make peoples lives more comfortable by not having all these chemicals in the food and being more healthy
Explanation:
explained up there
Where is the tropical rainforest biome found?
A. near the polar ice caps
B. near the equator
C. in northern coniferous forests
D. in mild temperature climates
Answer:
it's B
Explanation:
Tropical rainforest biome occur in regions that like between the equator and latitudes 5°-10° N and S. The forest areas are mainly in the lowlands but they can also extend hillslopes to a height of 600 or 900m.
An example is in Nigeria.
The climate in tropical rainforest regions is hot and wet throughout the year. It is dense and made up of many types of broad leaved trees that are mostly evergreen.
Epiphytes plants and Woody climbers known as Lianas are common features of these forests.
PeAcE.
Final answer:
The tropical rainforest biome is located near the equator. This biome is distinct from boreal forests, which are found in the colder regions south of the Arctic Circle and are characterized by coniferous trees.(Option B)
Explanation:
The tropical rainforest biome is found near the equator. Characterized by high biodiversity and constant warmth, it experiences abundant rainfall throughout the year. The tropical rainforest is the most diverse terrestrial biome and is often referred to as 'nature's pharmacy' due to the potential for new drugs from the organisms that inhabit these forests. With its dense vegetation of evergreen trees with broad leaves, the tropical rainforest biome plays a crucial role in the Earth's ecology and climate.
Boreal forests, also known as taiga or coniferous forests, are a different biome entirely, found in much colder regions south of the Arctic Circle. The boreal forest experiences cold, dry winters and short, cool, wet summers, and is characterized by trees such as pines, spruces, and firs that can tolerate the harsher conditions. This biome spans across Northern America and Eurasia, with its southern border extending to roughly between 50° and 60° north latitude.
PLEASE HELP!! What is slab pull?
options:
the edges become denser and gravity acts on these raised edges, pulling them downward and away from one another
currents just beneath Earth's crust flow very slowly, causing movement in the plates above them
cooler, denser crust sinks into the mantle
folding and crumpling and sliding upward creating mountains
Answer:
The answer is cooler, denser crust sinks into the mantle.
Explanation:
We live on Earth's crust, its thinnest and outermost layer. This layer is made from many smaller pieces called tectonic plates. These plates are not immobile; they are constantly moving to get closer to or further from each other. One of the main driving forces for tectonic plates movement is slab pull. Not all plates have the same density or temperature; oceanic plates are usually denser and colder the continental ones. Slab pull occurs when these two plates come completely next to each other and the denser oceanic plate subducts the continental, which means that it starts sinking below it, towards the asthenosphere (upper mantle), so the correct answer is cooler, denser crust sinks into the mantle.
Answer:
It is cooler, and denser crust crust sinks into the mantle.
Explanation:
I know this because I had a quiz with these exact same answers and the correct one was: It is cooler, and denser crust crust sinks into the mantle.
What happens when a population is in Hardy-Weinberg equilibrium?
O
A. The number of phenotypes increases.
B. The gene pool stays the same.
O
O
C. The allele frequency increases.
D. The alleles are distributed evenly.
When a population is in Hardy-Weinberg equilibrium, the gene pool stays the same. The correct option is B.
What is Hardy-Weinberg equilibrium?The Hardy-Weinberg equilibrium principle states that both the frequency and distribution of alleles in a population remain constant over the generations if the population is not subjected to evolutionary influences.
The Hardy-Weinberg equilibrium principle is utilized to examine the genetic variability in a population. It states that if the population meets certain requirements, such as having a large number of individuals, random mating, no mutations, no gene flow, and no selection pressure, the gene pool of that population will remain steady over generations.
This principle demonstrates that the genetic makeup of a population is not subject to changes over time, and the allele frequencies remain constant. This principle is essential since it establishes the limits within which evolution can occur in a population.
Therefore, the correct option is B.
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What is the role of cyclin-dependent kinases in the cell cycle?
Question 5 options:
They stop the cycle if something has gone wrong.
They catalyze the condensation of the chromosomes.
They provide the energy for the actions of the spindle fibers.
They initiate various stages of the cell cycle.
The role of cyclin-dependent kinases in the cell cycle is that, they stop the cycle if something has gone wrong.
Explanation:
In Eukaryotic cells cyclin-dependent kinases are universal regulator cell. It undergoes a constant cycle and degradation known as Mitotic and G1 cyclin. When cycle dependent cycle synthesize it acts like an activating protein and then bind to cyclin-dependent kinases forming cyclin-dependent kinases complex.
Now it acts as signal to the cell to pass the next phase of cell cycle. After its cyclin gets degraded, it deactivates the cyclin-dependent kinases and from particular phase signalling stop
Cyclin-dependent kinases, when bound to cyclins, form active complexes that phosphorylate other proteins to advance the cell through various checkpoints of the cell cycle. The concentrations of cyclin govern the timing of these events, and Cdk inhibitors can halt the cycle if necessary until conditions are favorable for progression.
The role of cyclin-dependent kinases (Cdks) in the cell cycle is crucial for the regulation and progression of the cell through different phases. Cdks, when bound to cyclin proteins, form active complexes that can phosphorylate other proteins. This phosphorylation is essential for activating proteins that advance the cell past various checkpoints, ensuring proper cell cycle progression.
These kinase enzymes are regulated by the levels of cyclins, which fluctuate during the cell cycle. The formation of the Cdk/cyclin complex, and its subsequent activation by phosphorylation at specific sites, is integral to the cell's advance to the next phase. These complexes become active at different points, each regulating distinct checkpoints within the cell cycle.
Furthermore, Cdk inhibitors play a role in halting cell cycle progression under problematic conditions until issues are resolved, ensuring the cell cycle only proceeds when it is safe to do so. By controlling the cell's progression through checkpoints such as G1, G2, and metaphase, these molecules serve as both triggers and gatekeepers of the cell cycle.
Plz help will give brainliest
The proteins will correspond with facilitated transportation
Option A
Carbohydrate will correspond with cellular respiration.
Option D
Lipid forms the cell membrane.
Option B
Nucleic acid will correspond with identical daughter cells.
Option C
Explanation:Proteins form all the sorts of receptors that are associated with the both transport and chemical messenger of the cell. The proteins help in facilitated transportation across the cell membrane along the concentration gradient.
The carbohydrates are the chief respiratory substrate that are biologically oxidized in an aerobic respiration to give out carbon dioxide, water and energy.
The lipids are the main composition of a cell membrane which is formed of phospholipids like lecithin, cephalin etc. These lipids have both hydrophilic and hydrophobic characters which is ideal for a cell membrane.
The nucleic acids are the DNA and RNA which are the genetic messengers of a cell that carries the genetic information across the generations to maintain the particular race. They maintains the properties of the organism.
Chipko Movement was started bybishnoi samaj of Rajasthan
The first ever Chipko Movement was initiated by the Bishnoi Samaj in Rajasthan about 260 years ago.
Explanation:
It all began when the Jodhpur King ordered to axe a huge number of trees in the khejadi village of Jodhpur.
When the soldiers began to cut the trees in spite of people protesting against it, one of the villagers (Bishnoi community) named, Amrita Devi, hugged a tree along with her daughters so as to protect it from the soldiers.
But unfortunately, the soldiers sacked the heads of Amrita Devi and her daughters; which led the villagers to rise together and protect the trees in the same way like how Amrita did.
The soldiers also sacked a lot of villagers who embraced the trees. Finally, the king startled at the unity of the people, abandoned the idea of axing the trees.
This movement based on the principles of satyagraha and non-violent resistance done by hugging the trees to protect them from being axed down became the novel example for all forest conservation movements.
Answer:
The Chipko movement or Chipko Andolan, was a forest conservation movement in India. It began in 1970s in Uttarakhand, then a part of Uttar Pradesh (at the foothills of Himalayas) went on to become a rallying point for many future environmental movements all over the world. It created a precedent for starting nonviolent protest in India,[1] and its success meant that the world immediately took notice of this non-violent movement, which was to inspire in time many similar eco-groups by helping to slow down the rapid deforestation, expose vested interests, increase social awareness and the need to save trees, increase ecological awareness, and demonstrate the viability of people power. Above all, it stirred up the existing civil society in India, which began to address the issues of tribal and marginalized people. The Chipko Andolan or the Chipko movement is a movement that practiced methods of Satyagraha where both male and female activists from Uttarakhand played vital roles, including Gaura Devi, Suraksha Devi, Sudesha Devi, Bachni Devi and Chandi Prasad Bhatt, Virushka Devi and others. Today, beyond the eco-socialism hue, it is being seen increasingly as an ecofeminism movement. Although many of its leaders were men, women were not only its backbone, but also its mainstay, because they were the ones most affected by the rampant deforestation,[2] which led to a lack of firewood and fodder as well as water for drinking and irrigation. Over the years they also became primary stakeholders in a majority of the afforestation work that happened under the Chipko movement.[3][4][5] In 1987, the Chipko movement was awarded the Right Livelihood Award "for its dedication to the conservation, restoration and ecologically-sound use of India's natural resources."[6]
Chipko-type movements date back to 1730 AD when in village Prasanna Khamkar of Rajasthan, 363 Bishnois sacrificed their lives to save Khejri trees.
Explanation:
How many times can mechanical
energy become chemical energy?
A. one time
B. two times
C. an infinite number of times
Answer
c
Explanation:
because mechanical energy has approximately 2.65% chemical energy causing it to be able to constantly change.
The mechanical energy becomes chemical energy an infinite number of times. The correct option is C.
What is mechanical energy?Mechanical energy is the energy that can be kinetic or potential. It is the energy that is possessed by an object when it is doing any work or is in motion. For example, if a box is held vertically, it contains mechanical energy that is released when it is released.
Chemical energy is the energy that is stored in the bonds of atoms and molecules. The energy is released when any reaction happens, the bonds release energy.
The mechanical energy can change into chemical energy for an infinite time because during every reaction, the energy is used and chemical energy is either formed or released.
Thus, the correct option is C. an infinite number of times.
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When plants and animals die, their bodies are decomposed by organisms such as bacteria or fungi. Which statement is true regarding the decomposition process?
A.
Decomposition is a chemical change because the identity of the dead plant or animal does not change.
B.
Decomposition is a chemical change because the organism is broken down into new substances.
C.
Decomposition is a physical change because the organism is broken down into new substances.
D.
Decomposition is a physical change because the identity of the dead plant or animal does not change.
Reset Submit
Answer:
is the chemical change because the identity of the dead plants or animal does not change
Answer: Option B
Explanation:
The process of decomposition can be defined as the process in which the body of the organism is broken down from complex substances to the simpler substances.
The process is a part of the nutrient cycle is essential because the nutrients needs to be recycled in order to be available for the plants and other species.
The body starts decomposing after the death of the organism. It is a chemical change in which the complex form of the body is converted into simpler form.
How is science different from other subjects such as art or history
Science is the study of everything it is generally has it's fingers in every (subject) pie. But could be the detailed description of it.
Answer:
Science is about the cells and stuff while art is about the drawing and human body and history is about the stuff that has or is happening in our world.
Explanation:
Do you need this on like a quiz or somthing? Just wondering
Mistletoe has a parasitic relationship with shrubs and trees. How would the carrying capacity for apple trees in an orchard be affected if the mistletoe population decreased in size? A. The carrying capacity for apple trees would increase. B. The carrying capacity for apple trees would decrease. C. The carrying capacity for apple trees would stay the same.
If the mistletoe population decreased I size the carrying capacity of the apple trees could increase.
Explanation:
Mistletoe is a parasitic species that can affect several tree species. In a parasitic relationship only one party will be benefited while the other party will be affected negatively. The scientific name of common mistletoe is Viscum album L. and it can affect tree vitality and productivity.
Mistletoe can affect the flowering and fruiting of trees which makes apple trees lag behind in fruit production. The infection can also make the trees more susceptible to further attacks from other pests. Thus controlling mistletoe infection would help greatly in improving tree health and productivity.
List the name and number of each molexule forming ATP.
Answer:
Each ATP molecule contains one ribose molecule, one adenine molecule and three phosphate groups.
Explanation:
Each molecule of Adenosine triphosphate (ATP) is composed of one ribose molecule (sugar), one adenine molecule (nitrogenous base), and a chain of three phosphate groups bound to ribose. It is the energy-carrying molecule present in the cells of all organisms. Cells in the body of the organisms produce the energy for their functioning, by converting the energy stored in the food nutrients into a more usable form called adenosine triphosphate (ATP), which will release energy when the need arise. This process is known as cellular respiration.
What are the two specific concerns of species diversity?
Species diversity is very important to keep a biodiversity and a sustainable ecosystem running.
Explanation:A species diversity is of three types. It’s actually a biodiversity which are of three types – alpha biodiversity, beta biodiversity and a gamma biodiversity. These bio diversities are necessary for a particular reason. They are
A biodiversity comprises of the total quantity of each species residing in a particular ecosystem. Now decrease or increase in any of the species hamper the others, as all of them are being in a food chain. A biodiversity makes the earth habitable. This is why a biodiversity is necessary for a sustainable ecosystem and carrying a race forward.how many ATP molecules must be invested to break one molecule of glucose into 2 molecules of pyruvate
Answer:
4 ATP
Explanation:
Answer:
4 ATP I think not to sure
Which body changes occur during adolescence?
A) sexual maturity and growth spurts only
B) puberty and growth spurts only
C) sexual maturity and puberty only
D) growth spurts, puberty, and sexual maturity
Answer:
D
Explanation:
These include voice changes, body shape, pubic hair distribution, and facial hair.
Breast development. changes in body shape and height. growth of pubic and body hair. the start of periods.
The first places to grow are the extremities (head, hands, and feet), followed by the arms and legs, and later the torso and shoulders. This non-uniform growth is one reason why an adolescent body may seem out of proportion. During puberty, bones become harder and more brittle.
During adolescence, individuals experience puberty, marked by an adolescent growth spurt, sexual maturity, and the development of primary and secondary sexual characteristics. These changes are regulated by hormones and result in noticeable physical transformations.
Explanation:Body Changes During AdolescenceDuring adolescence, a number of significant body changes occur as part of the developmental process. Adolescence is identified by the onset of puberty, during which individuals experience a series of physical and hormonal changes that lead to sexual maturity. One notable change is the adolescent growth spurt (AGS), a period characterized by rapid growth in height and weight, and changes in body composition and proportions.
Further developments during puberty include the maturation of primary and secondary sexual characteristics. Primary sexual characteristics involve the organs needed for reproduction, such as the uterus and ovaries in females, and the testes in males. Secondary sexual characteristics are indicative of sexual maturation but do not directly involve the reproductive organs, such as the development of breasts and hips in females, and facial hair and a deepened voice in males. These changes are controlled by a complex release of hormones including GnRH, LH, FSH, testosterone in males, and estrogen in females.
Therefore, the correct answer to the question 'Which body changes occur during adolescence?' is D) growth spurts, puberty, and sexual maturity.
what is the original science called
ORIGINAL SCIENCE
Explanation:
Science is an enterprise building term that organizes theories and knowledge in the form of tests and predictions based on the universe.Ancient Egypt and Mesopotamia were the roots in which science was discovered in around 3500 to 3000 B.C.Modern sciences are divided into three sciences and they areSOCIAL SCIENCES( ECONOMICS, PSYCHOLOGY)
NATURAL SCIENCES (BIOLOGY, PHYSICS, CHEMISTRY)
FORMAL SCIENCES( LOGIC, MATH)
Original science was first termed as NATURAL PHILOSOPHY and the scientists of this science were termed as NATURAL PHILOSOPHERS.The English word scientist was termed by WILLIAM WHEWELL in the period of the 19th century.Hundreds of years ago, it was believed by many that our solar system was Geocentric. This means that Earth is at the center of the solar system, with the Sun and other planets orbit around it. Today, the solar system is now thought to be Heliocentric.
What does this mean?
Question 6 options:
The Sun and other planets orbit Earth.
Earth and all the other planets orbit the Sun.
The other planets orbit Earth, and Earth orbits the Sun.
The Sun orbits Earth and the other planets orbit the Sun.
Earth and all the other planets orbit the Sun.
The shift from a geocentric to a heliocentric model represents a fundamental change in our understanding of the solar system's organization. In the geocentric model, which prevailed for centuries, Earth was considered the stationary center of the universe, with the Sun, Moon, planets, and stars orbiting around it. This view was supported by observations of celestial motion and was deeply entrenched in both scientific and religious thought.
However, advancements in astronomy and the development of new observational techniques challenged the geocentric model. In the 16th century, the heliocentric model emerged, proposed notably by Nicolaus Copernicus. According to this model, the Sun is at the center of the solar system, with Earth and other planets orbiting around it. This concept was revolutionary and marked a significant shift in our understanding of the cosmos.
In the heliocentric model, Earth is just one of several planets orbiting the Sun. Each planet follows an elliptical path around the Sun, with the Sun exerting gravitational force as the central body. This model not only provided a more accurate explanation of celestial motion but also laid the groundwork for modern astronomy and our understanding of the universe's structure.
Today, the heliocentric model is widely accepted and forms the basis of our understanding of the solar system. It has been validated through numerous observations, experiments, and mathematical calculations, including those by Johannes Kepler and Isaac Newton. The heliocentric view allows for a more coherent explanation of planetary motion, gravitational interactions, and other celestial phenomena.
In summary, the transition from a geocentric to a heliocentric model signifies a profound paradigm shift in our understanding of the solar system's organization. It asserts that the Sun, not Earth, is the central body around which the planets orbit, revolutionizing our perspective on the cosmos and laying the foundation for modern astronomy.
In order for matter to recycle and return in the food chain shown here, what must be present at level A?
A) Producers
B) Decomposers
C) Tertiary consumers
D) Secondary consumers
Answer:
The answer is "B"
Explanation:
Decomposers like bacteria and fungi decompose any amount of living and non-living organic matter that is left unconsumed in the ecosystem. They cycle the matter back into the food chain in forms that can be used by producers to make the matter available to the consumers.
the whale shark is accompanied by pilot fish who ingest any parasites they find on the surface of the shark skin. identify the relationship as predator prey mutualism commensalism parasitism or interspecific competition
Answer:
The correct answer will be option- mutualism
Explanation:
Organisms interact with each other in an ecosystem in many ways which could prove beneficial or harmful interaction.
The interaction between the whale shark fish and the pilot fish is beneficial to both the fishes and prove mutualistic so the interaction is called mutualism.
The interaction is mutualistic as the pilot fish which swims in the mouth of the whale help get rid of the small pieces of food stuck in the mouth. The pilot fish thus eats the food of the whale whereas the whale benefit pilot fish by not eating the pilot fish.
Thus, mutualism is the correct answer.
The relationship between whale sharks and pilot fish is mutualism, a symbiotic relationship where both species benefit. Pilot fish eat parasites from the shark’s skin, and the shark gets a healthier skin in return.
Explanation:The Relationship between Whale Sharks and Pilot FishThe relationship between whale sharks and pilot fish can be identified as mutualism. In this symbiotic relationship, both species benefit: the pilot fish ingest parasites from the shark's skin, which provides them with food, while the shark benefits from the removal of the parasites, sustaining skin health. This relationship is comparable to other instances of mutualism in the marine environment, such as the goby fish and shrimp, where both parties gain from the association.
Mutualistic relationships are essential for maintaining the balance of ecosystems and can also manifest in different forms, such as with cleaner fish that remove parasites from within larger fish’s mouths. Similarly, the relationship between the remora and the shark is often considered commensalism, where the remora benefits while the shark is largely unaffected. However, in some cases, these relationships may even transition into mutualism if the presence of the remora or other organisms provides some form of benefit to the host.
How do certain organelles help cells maintain homeostasis?
Answer:
The cell contains many organelles whose primary job is to either control what goes in and out of the cell or to control the influx and out-flux of certain materials that can potentially change the environment of the cell. These organelles are listed below:
Cell membraneMitochondriaAutophagosomesLysosomesExplanation:
A stable environment is paramount to the proper functioning of a cell. The regulation of the cells' internal environment to keep it stable is termed as homeostasis. Cell organelles perform varied functions to stabilize the cell's environment:
Cell Membrane:The cell membrane is the outer covering of the cell that serves as semi-permeable barrier against the extracellular environment. Being a semi-permeable barrier, the cell membrane only allows specific substances to enter the cell.
Mitochondria:Apart from being the power house of the cell, mitochondria also play an active role in homeostasis. Mitochondria detect nutrient levels in the cytoplasm; they are also involved in lipid catabolism.
Autophagosomes and LysosomesAutophagosomes aid homeostasis by degrading and getting rid of harmful substances such as old/damaged organelles, pathogens, protein aggregates and storage nutrients such as lipid droplets. Autophagosomes deliver these harmful substances to lysosomes. Lysosomes are the cell's principal recyclers. They digest the lethal substances and export their remains outside the cell.
Apart from these, there are other organelles that indirectly contribute to homeostasis:
Although not directly involved, the ribosomes are responsible for the production of the proteins that are involved in the very process of homeostasisWhich organisms are most likely to survive in a population in which disruptive selection is occurring
Answer:
organisms that have extreme traits
Explanation:
Answer:
b
Explanation:
organisms that have extreme traits
what is the correct definition of power
Power is the rate at which work is done or energy is transferred in a system, and it is measured in Watts (W). It can also reflect an entity's ability to influence events or control its environment, particularly in social or governmental contexts.
Power in physics is the rate at which work is done or the rate at which energy is transferred to or from a system. It can be described mathematically as P = W/t, where P stands for power, W stands for work done, and t represents time. The SI unit for measuring power is the Watt (W). In a broader sense, power can also refer to an entity's ability to control its environment, interact with others, or influence events, especially in the context of government or social dynamics.
When power is constant, it remains the same as energy conversion or transfer happens over time. However, sometimes power can vary during the process of energy transfer, in which case, we regard power as the limit of the average power as time intervals approach zero.
As the human population continues to grow, humans cut down trees to build homes, shopping malls, and roads. Which part of the water cycle is affect by the cutting down of trees and removal of plants? Evaporation Condensation Transpiration Run off
Answer:Transpiration
Explanation: water cycle is the continuous movement of water on the Earth to ensure the availability of water.water is a universal solvent that is essential for the survival of living things.water cycle ensure that clean water is available.plants require water which is gotten from the soil.water is lost from the leaves of trees through transpiration.transpiration may also occur through the lenticels and stomata of stems.
the movement of water through the plant is called transpiration pull.this is responsible for the pull of water into the leaves.it increases the absorption of minerals from the soil and also cools the plant.
This water vapour that transpire from the plant,is condense as clouds, which then falls to the Earth as rain and the water cycle continue
Which type of fossil is an imprint made by an organism that was preserved in rock? A.cast fossil B.sedimentary fossil C.mold fossil D.petrified
Answer:
Which type of fossil is an imprint made by an organism that was preserved in rock? A.cast fossil B.sedimentary fossil C.mold fossil D.petrified. I honestly don't know the answer but in my opinion its B.sedimentary fossil don't know look here.
Explanation:
Well a sedimentary fossil does have organisms, plus+ Jump to Fossils - Sedimentary rocks contain important information about the history of the Earth. They contain fossils, the preserved remains of ancient plants and animals. ... Sedimentary rocks can contain fossils because, unlike most igneous and metamorphic rocks, they form at temperatures and pressures that do not destroy fossil remains.
Sedimentary fossil is an imprint made by an organism that was preserved in rock.
What is sedimentary fossil ?
Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth's surface, followed by cementation.
Why are fossils found in sedimentary rocks?
Almost all fossils are preserved in sedimentary rock. Organisms that live in topographically low places (such as lakes or ocean basins) have the best chance of being preserved.
Hence , B is correct option
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Answer 14
Answer:
liquid- enzymes
protein- fat
carbohydrate- saccharides
nuclei acid- dna or deoxyribonucleic acid
The sunflower plant and paddy plant are flowering plants. State one similarity and three differences between the two plants.
Answer:
One similarity between the sunflower plant and paddy plant is that both of them have a non-woody stem. The three differences are; sunflower plant is a dicot, and has branching veins and taproots while paddy plant is a monocot, and has parallel veins and fibrous roots.
Explanation:
The paddy plant is a monocot (monocotyledon), where only one embryonic leaf (cotyledon) is present inside the seed coat. The monocots have a fibrous root system and their leaf veins are parallel. The sunflower plant is a dicot or dicotyledon, which contains two embryonic leaves inside the seed coat. The leaf veins of dicots are branched. They have taproots. Both the sunflower plant and paddy plant can be used as food. Both have a non-woody stem.
1.
A human is a. .
A. one-celled eukaryote.
B. many-celled eukaryote. :
C. one-celled prokaryote.
D. many-celled prokaryote.
many
B. many celled eukaryotic.
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Unspecialized human cells are called ____________.
Question 3 options:
cancer cells.
mitotic cells.
signal cells.
stem cells.
Answer:
stem cells
Explanation:
Stem cells differ from other kinds of cells in the body. All stem cells—regardless of their source—have three general properties: they are capable of dividing and renewing themselves for long periods; they are unspecialized; and they can give rise to specialized cell types.
Unspecialized human cells are known as stem cells. They have the unique ability to produce more cells of the same type, and under certain conditions, to specialize into more specific cell types.
Explanation:Unspecialized human cells are called stem cells. Stem cells are unique because they are unspecialized cells capable of renewing themselves through cell division, and under certain physiological or experimental conditions, they can be induced to become tissue or organ-specific cells with special functions. Stem cells serve as a sort of repair system for the body, replenishing adult tissues. In a developing embryo, stem cells can differentiate into all of the specialized embryonic tissues. In adult organisms, stem and progenitor cells act as a repair system for the body, replenishing adult tissues.
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Cancer cells are less likely than normal cells to undergo _______, or programmed cell death.
Cancer cells are less likely than normal cells to undergo _apoptosis______, or programmed cell death.
Apoptosis is synonymous to programmed cell death
Explanation:
Programed cells death of the cell is required to maintain proper tissue homeostasis. Examples of when apoptosis is necessary are when a cell may have errors in its DNA replication process. Apoptosis ensures the cell does not continue dividing and generating cells with the error. Other forms of damage to a cell that is hard to repair also require that the cell undergo apoptosis.
In cancer cells, apoptosis pathway faulted and even when cells are required to undergo programmed cell death, such as in the case when lethal mutations occur, the cell continues to divide creating many cells that have the defect. This is what creates cancer tumors,
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Answer: haploid
apoptosis
metaphase plate
Parthenogenesis
Meiosis
chiasma
Answers may vary. Meiosis results in four daughter cells, whereas mitosis produces only two daughter cells. Meiosis has two distinct phases, meiosis I and meiosis II, whereas mitosis takes place in a single cycle. Daughter cells in meiosis are genetically unique from one another. Mitotic daughter cells are genetically identical. Both mitosis and meiosis have similar basic steps (prophase, metaphase, anaphase, and telophase). Both mitosis and meiosis have cell cycle regulation mechanisms, including checkpoints and cell cycle regulators, which allow them to consistently produce normal cells.
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