Which statement accurately describe soil?

Answer:

C: 2

Explanation:

The Krebs Cycle produces two molecules of ATP for every molecule of glucose or sugar.

Answer:

(C). 2.

Explanation:

Krebs cycle can be defined as a cyclic reaction, which involves generation of energy by oxidation of aceyl coenzyme A, derived from complex compounds, such as glucose. In eukaryotes, Krebs cycle takes place inside the mitochondria.

It is used by most of the living cells to generate energy during aerobic respiration. Two molecules of ATP are formed in each cycle of Krebs cycle.

Thus, the correct answer is option (C).

Answer:

Biotic factors can be described as all the living factors that are present in an environment or ecosystem. Abiotic factors can be described as all the non- living components that are present in an environment or ecosystem. Abiotic factors determine which organisms are capable of surviving in a particular environment. The biotic factors determine the interaction of an organism with other organisms of an ecosystem.

Examples of biotic factors include the plants, animals and humans. Examples for abiotic factors include the sun, water etc.

Final answer:

Biotic factors are the living components of an ecosystem, such as plants and animals, whereas abiotic factors are the nonliving environmental elements like sunlight and temperature. The interaction between these factors is crucial for ecosystem dynamics and the distribution of organisms.

Explanation:

The question addresses the difference between biotic and abiotic factors, which are fundamental concepts in ecology and biology. Biotic factors are the living components of an ecosystem, which include organisms such as plants, animals, bacteria, fungi, and any other living things. These factors interact with each other in various ways, such as predation, competition, and symbiosis. On the other hand, abiotic factors are the nonliving components that influence the living organisms within an ecosystem. These include sunlight, temperature, water, soil quality, and other physical and chemical aspects of the environment.

Abiotic factors often determine the kind of biotic factors that can exist in a particular environment. For example, the amount of rainfall and temperature in an area can influence the soil quality, which in turn affects the types of plants that can grow there. These plants then provide food and habitat for various animal species, illustrating the intricate interactions between biotic and abiotic factors. Such interactions play a crucial role in shaping ecosystems and determining the distribution of life forms across different biomes.

Answer: The answer  is 33.3 .......D .....as just divide 500 by 15.....so you get the answer !!!

Answer: D. 33.3 um

Explanation: usatestprep approved

Answer: Astronomers think that quasars are located in galaxies which have black holes at their centers. The black holes may provide quasars with their energy. Quasars are so bright that they drown out the light from all other stars in the same galaxy.

Explanation: from N.A.S.As website

you die....that's what happens....or if you want the more gradic answer than, your chest explodes into a million pieces and your guts go flying everywhere. :)

Answer:

Conduction

Explanation:

Conduction is the method of easily traveling from an object to another.

Answer:

A

Explanation:

conduction

Answer:

C

Explanation:

During their development, many organisms look similar, suggesting that very different organisms may have a common ancestor. - Think of the human fetal neural / spine development which mirrors other species.

Answer:

C. during their development, many organisms look similar, suggesting that very different organisms may have a common ancestor.

Explanation:

During embryological development, the intermediate stages of one group of organisms exhibit stages of evolution in form of features of other groups. This suggests that the given group must have a common ancestor with the other group. It is called "ontogeny repeats phylogeny".

Example: Human embryo has a tail which otherwise is the feature of reptiles.  

Answer:

600,000 years

Explanation:

Every 600000 years it changes

The cytoplasm is the liquid material covered with the cell membrane, doing all the necessary process within the cell, hence all option is correct.

The cytoplasm is liquid material inside the cell in which all the cellular process is done, except the nucleus all the material inside the cell membrane is known as cytoplasm.

The cytoplasm contains all the proteins which are responsible for cell growth and also maintains the cell in a defined shape, for the movement of a cell from one place to another is also a cytoplasmic movement.

Cellular process glycolysis is held in the cytoplasm of every cell, and another enzymatic process also, cytoplasmic material having a defined concentration of a substance in it, which allows determining which material is in and out.

Therefore cytoplasm does much work inside the cell, hence all options are correct.

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Answer:

A. The appearance and smell attract decay insects, like flies, that help pollinate the plant.

Explanation:

Rafflesia arnoldii is a plant member of the Rafflesia genus, whose flower can reach up to 1 meter in diameter and weigh up to 11 kg. Because of its exaggerated size, the plant became known as a “monster flower”. In addition, this flower exhales a very unpleasant smell and because of this smell it became known as "cadaver flower".

As we know the pleasant smell and the good appearance of the flowers end up attracting birds and some insects that help in pollination, allowing the species to survive through the ages. However, the Rafflesia flower has neither attractive smell nor color, this could be a problem for the reproduction of these plants. However, the smell and the unpleasant appearance managed to attract decomposing insects, such as flies, and these insects are able to help pollination.

Answer:

a

Explanation:

just did it

Answer:

A. Hydrogen Bond

B. Adenine

C. Guanine

D. Thymine

E. Cytosine

Explanation:

The double helix is held together in the middle by hydrogen bonds that connect the different bases together. There are 4 bases that make up a DNA, guanine, cytosine, thymine and adenine. Each base pairs up with a specific base because each of them have a distinct shape. Adenine matches up with Thymine, while Guanine matches up woth Cytosine.

Heterozygous because one who has a heterozygous gene is referring to one who has two different alleles in 1 gene. Homozygous refers to one who has two alleles who’s characteristics are exactly the same forming a similar but different gene compared to homozygous.

Final answer:

The person with long eyelashes that also carries a gene for short eyelashes is heterozygous, having one dominant allele for long lashes and one recessive allele for short lashes.

Explanation:

The individual described in the question has long eyelashes but also carries a gene for short eyelashes. This indicates that the person has two different alleles for the eyelash length gene: one allele for long eyelashes (L) and one for short eyelashes (l). Therefore, the person is heterozygous for this trait, meaning they have one dominant allele (L) and one recessive allele (l) for eyelash length.

Being heterozygous is like having a combination of alleles for a given gene. In contrast, an individual who is homozygous for a trait would have two identical alleles, either both dominant (LL) for long eyelashes or both recessive (ll) for short eyelashes. Traits can be controlled by one gene or multiple genes, but in the case of eyelash length, we're assuming a single-gene influence.

C no because many species went extinct without leaving fossils behind

Answer:

C. No because many species went extinct without leaving fossis behind.

Explanation:

Not all species will leave fossils and we can't infer things about other species from a fossil of a specific species.

Answer:

A digestive disease in which stomach acid or bile irritates the food pipe lining. This is a chronic disease that occurs when stomach acid or bile flows into the food pipe and irritates the lining. Acid reflux and heartburn more than twice a week may indicate GERD.Symptoms include burning pain in the chest that usually occurs after eating and worsens when lying down.Relief from lifestyle changes and over-the-counter medications is usually temporary. Stronger medication may be needed.

Answer: One common cause of acid reflux disease is a stomach abnormality called a hiatal hernia. ... But if you have a hiatal hernia, acid can move up into your esophagus and cause symptoms of acid reflux disease. These are other common risk factors for acid reflux disease: Eating large meals or lying down right after a meal.

Explanation: thumbs up

Answer: Taxonomy

Explanation:

It is the branch of science that deals with the classification of living things in a hierarchical system. The word taxis means arrangement so it deals with the proper arrangement of the organism based on their shared characters.

Linnaeus is known as the father of taxonomy who gave a proper method for classifying the living organism.

Taxonomy is the branch of biology that classifies living things in a hierarchical system. Therefore option B is correct.

Taxonomy is the branch of biology that deals with the classification, identification, and naming of living organisms. It involves organizing and categorizing organisms into hierarchical groups based on their shared characteristics and evolutionary relationships.

The primary goal of taxonomy is to create a systematic framework that reflects the diversity of life and allows scientists to study and understand the relationships between different organisms.

Taxonomists use a combination of morphological, anatomical, genetic, and ecological data to classify organisms into different taxonomic ranks, including species, genera, families, orders, classes, phyla, and kingdoms.

In summary, option B taxonomy is the branch of biology that classifies living things in a hierarchical system, providing a framework for understanding the diversity and relationships among organisms.

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Answer:

The answer is the second choice

Explanation:

Answer:

B. The base pairing of adenine to thymine and of guanine to cytosine was a key piece of information in elucidating the structure of DNA.

Explanation:

Erwin Chargaff, a biochemist proposed a rule called Chargaff’s rule that states that s that the amounts of the purine bases are equal to pyrimidine bases.  Thus, the amount of adenine is equal to the amount of thymine, and the amount of cytosine is equal to the amount of guanine. Further, he states that the pairing of bases is fixed. Adenine always pairs with thymine and guanine is always pairs with cytosine.

Answer:

Chloroplasts have their own DNA.- last choice

The trait of chloroplasts that supports the endosymbiotic theory is that they have their own DNA. Hence option d is correct.

The endosymbiotic theory is a scientific theory that explains the origins of eukaryotic cells, which are the types of cells found in plants, animals, fungi, and protists.

According to the endosymbiotic theory, chloroplasts and mitochondria evolved from free-living prokaryotic cells that were engulfed by larger host cells.

Over time, these smaller cells established a mutually beneficial relationship with their hosts, eventually becoming integrated into the host's cellular machinery.

One piece of evidence supporting this theory is that chloroplasts, like mitochondria, have their own DNA, which is circular and similar in structure to the DNA of bacteria.

This suggests that chloroplasts and mitochondria are the descendants of free-living bacteria that were engulfed by host cells and became incorporated into their structure.

Furthermore, chloroplasts, like mitochondria, are capable of carrying out many of the functions necessary for their own survival, including protein synthesis and DNA replication, independent of the host cell.

Hence option d is correct.

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Answer:

I just know that

A gene - distribution of yellow pigment

B gene- distribution of black pigment

The probable genotype of the yellow-haired rat parent is heterozygous (Yy) and the black-haired rat is likely homozygous recessive (yy). A Punnett square would predict a 1:1 ratio of yellow to black offspring, which is approximated by the actual offspring count. To determine the dominant allele, perform a testcross with a homozygous recessive individual.

The probable genotype of the parents can be inferred from the offspring's phenotype. Since we observe both yellow and black offspring, this suggests incomplete dominance or codominance, if we assume a case of simple Mendelian inheritance. From the given information, it appears yellow coat color is a dominant trait because it is expressed in the offspring. By using a Punnett square, we can see that for a ratio close to 1:1 (45 black to 52 yellow), one parent could be heterozygous yellow (Yy) and the other parent black (yy), assuming yellow is dominant. If yellow were recessive, we'd expect all black offspring if one parent was yy.

To confirm which allele is dominant, you could perform a testcross with a known homozygous recessive individual. If any offspring display the yellow phenotype, the yellow allele is dominant. Keep in mind that in this example, yellow and black coat colors do not strictly conform to complete dominance. In reality, the genetics of coat color can be complex, involving multiple genes and interactions. However, for the purposes of this question, we are assuming simple Mendelian inheritance.

This would be D. Cell Membrane

Here is the function of the other organelles in the answer choices in case you didn't know

A. It is the power house and makes/converts the energy of the cell

B. It hold all the organelles in place

C. processes/finalizes protein

Hope this helped!

~Just a girl in love with Shawn Mendes

Answer:

D) cell membrane

Explanation:

edge. 2020

Answer:

The climate in that area is different today then when tropical plants and animals lived there

Explanation:

The climate on Earth is constantly changing, and there's numerous factors that contribute to it. The climate can shift from being warm and wet, to cold and dry relatively quickly, thus changing the flora, fauna, and the landscape as a whole. It is no wonder that tropical plants and animals are found in the fossil records in the northern part of Texas, as in the past this region has been dominated by warm and wet climate. That enabled the development of a biome that supported tropical plants and animals. That didn't lasted forever of course, and the climate changed, so Texas became a place with more temperate climate with relatively small amount of precipitation, resulting in changes of what types of animals and plants live there.

Answer is option c) The climate in that area is different today than when tropical plants and animals lived there.

The most likely cause for the disappearance of tropical plants and animals in North Texas is significant changes in the climate over time.

Fossils of tropical plants and animals found in limestone rock in North Texas indicate that the climate in this area was once much warmer and more tropical. The most likely cause of the disappearance of these plants and animals is that the climate in that area is different today than when tropical plants and animals lived there. Over geological time scales, changes in the Earth's climate have transformed regions, leading species that could not adapt to new conditions to either migrate or go extinct.

For example, scientists have observed major climatic shifts in regions like the Olorgesailie region in Kenya. These shifts have caused some species to go extinct and allowed new, more adaptable species to thrive.

Answer: Oxaloacetate

Explanation: The krebs cycle starts with the pyruvic acid that is obtained after glycolysis. The Kreb's cycle begins when the Acetyl coA combines with a four molecule oxaloacetate.

The main product formed is citric acid thats why the cycle is also called as citric acid cycle. After the citric acid is formed it goes through a series of reactions to form NADH, FADH2 and ATP.

The carbon dioxide is also released during this process. The oxaloacetate formed is used to start the cycle so its is regenerated again and again.

Oxaloacetate is the molecule that is essential to regenerate at the end of the Kreb's cycle to start the process again.

Level: High school

Subject: Biology

Topic: Cellular respiration

Sub-topic: Kreb's cycle

Answer:

With short forelimbs and long, muscular hind legs,

Explanation:

Chinchillas have a complex muscular system that includes key muscles such as the temporalis and masseter for chewing, as well as various facial, thoracic, abdominal, pelvic girdle, and limb muscles. These muscles help in movement and vital functions.

Chinchillas, like most mammals, have a variety of muscles that serve different functions. Some of the key muscles in a chinchilla include:

In summary, chinchillas have a complex muscular system that includes jaw muscles like the temporalis and masseter, as well as facial, thoracic, abdominal, pelvic girdle, and limb muscles, all of which play crucial roles in their daily functions.

Through lobbying special interest groups and businesses can influence the government.

Lobbying is a useful business tactic for influencing government decision making, particularly for businesses facing threats such as a tax hike or a new policy that could damage their product or service. Lobbying gives businesses a voice to influence the policies and regulations that matter to their business.

Lobbying is the act of attempting to influence business and government leaders to create legislation or conduct an activity that will help a particular organization.

Lobbying is also a much-needed mechanism and method that smoothens the interface between the government and the business. Indeed, without lobbying, there would be a “dialogue of the deaf” wherein the government and the business worlds would be talking within themselves without any meaningful conversation.

The correct answer is option B.

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B. lobbying

Special interest groups and businesses can influence the government primarily through the process of lobbying (option B). Lobbying involves individuals or groups advocating for specific policies, legislation, or regulatory changes to lawmakers and government officials. Lobbyists may engage in various activities, such as meeting with legislators, providing information and research, organizing events, and offering campaign contributions. Through these efforts, special interest groups and businesses seek to shape public policy decisions in their favor, often by promoting their interests or agendas. While protests (option A) can also raise awareness and pressure the government, lobbying is a more direct and organized means of influencing decision-makers. Tax payments (option C) are a requirement for individuals and businesses but do not directly influence government policy. Passing a new bill (option D) is a legislative process that may be influenced by lobbying efforts but is not a method by which interest groups and businesses directly exert influence.

Answer:

B blinking when light is flashed in eyes

Answer:

Diffusion

Explanation:

Answer:

I believe it is diffusion

Explanation:

Diffusion maintains homeostasis most likely like that out of the other options.

Hi!

I can do Homologous structures and vestigial structures

Homologous structures are similar bone structures in very different species, like whales and bats. We use this to see how we evolved alongside other animals with the same common ancestor.

Vestigial structures are structures we don't need anymore, like our tailbone. We can use these to tell how our ancestors lived and what they needed to survive.

Hope this helps!

Final answer:

Convergent evolution involves unrelated species developing similar traits, while divergent evolution involves related species developing different traits, often leading to speciation. Homologous structures indicate common ancestry, and vestigial structures are remnants of once-functional traits in ancestors. Common misconceptions include misconstruing evolution as unproven, believing it occurs in individuals or has a predetermined direction.

Explanation:

Convergent and Divergent Evolution:

Convergent evolution occurs when unrelated species evolve similar traits due to having to adapt to similar environments or ecological niches. An example is the development of wings in both birds and bats, which both evolved for flight, yet these animals are not closely related. Divergent evolution is the opposite process, where related species evolve different traits. It often occurs when populations of a species become isolated, leading to the development of new species — a process known as speciation.

Homologous and Vestigial Structures:

Homologous structures are body parts in different species that have a similar structure, but not necessarily a similar function, indicating a common ancestry. An example would be the bones in the forelimbs of humans and bats. Vestigial structures are remnants of organs or structures that had a function in an early ancestor but are no longer functional or have reduced function in the modern descendants. The human appendix is a commonly cited example.

Misconceptions About the Theory of Evolution:

One common misconception is that evolution is just a theory and not proven, when in fact, it is a well-supported scientific framework. Another misconception is that individuals evolve, whereas evolution occurs over generations and affects populations rather than individuals. Lastly, evolution is often mistakenly believed to have a predetermined direction or goal, but it is a natural process that responds to environmental pressures without specific end goals.

Answer:

A. artesian well

Explanation:

The artesian well represents a well that is pumping out water on the surface in a natural way, thus not needing any human assistance. The water is coming vertically or diagonally upward toward the surface from an aquifer that lies below it. This happens when there's an aquifer between two impermeable layers of rocks, so when there's new water flowing in it, it can not accumulate it, so the pressure rises and the water is pushed up on the surface where there are the cracks or softer rocks. The artesian wells are relatively common, and they usually are not large, but pump out smaller amounts of water, creating small streams.

Answer: Prokaryotes are single-celled organisms that lack a nucleus. They also lack other membrane-bound organelles.

Answer:

D

Explanation:

Supernovae are an explosion of stars, during star death. During the life cycle of a star, it gravitation pull of its core squeezes lighter atoms such as hydrogen into heavier atoms like helium and carbon. When the stars explode in a supernova, these elements are jettisoned out forcefully into outer space even up to speeds of 25,000 miles/second.

Answer:

D. When a star explodes as a supernova elements that are heavier than hydrogen spread throughout the universe.

Explanation:

I'm not sure what they exactly mean by "form" but,

Most carbon is stored in the ocean in sediments. These sediments and rocks develop from the hard shells and body parts of marine organisms that have absorbed the carbon in the water. When they die, their bodies sink to the ocean floor, and the hard parts break down into sediment, which later are formed into sedimentary rocks.

When in contact with water that is acidic carbon dissolves and will precipitate out as sediment such as calcium carbonate (limestone). This cycling between solution and precipitation is the background against which more rapid parts of the cycle occur.

So, it should be sediments, but it could also be calcium carbonate..

Answer:

The majority of carbon is present in the dissolved state in the ocean and in the limestone rocks on the ocean floor.

Explanation:

Carbon is one of the main greenhouse gas that is emitted mainly from the volcanic eruptions and burning of fossil fuels. Some amount is released by the living organisms during respiration.

This carbon is then transported from the atmosphere to the lithosphere through the rainfall (precipitation). This atmospheric carbon when reacts with the water, it forms a weak acid which is commonly known as Carbonic acid. This acid-containing water reacts with water undergoing chemical weathering releasing ions such as, calcium, magnesium, sodium, which are further carried bu the rivers to the oceans.

These calcium ions then react with bicarbonate ions, thereby forming calcium carbonate. In addition to this, they are also formed by organisms that are comprised of hard shells. These organisms when they die, they sink and accumulate at the bottom of the ocean floor. With the increase in time, these shell layers combine with sediments forming carbonate rock called limestone in which the carbon is stored.