Answer:
Main biological process are photosynthesis and respiration, responsible for the cycling of oxygen.
Explanation:
The two main process are responsible for the cycling of oxygen are photosynthesis and respiration. They are interconnected with the water cycle and carbon cycle.
The oxygen is the cycle that helps to move oxygen from biosphere, lithosphere and atmosphere. How the oxygen cycle takes place:
Photosynthesis: During the day, plants take energy from the sun, Carbon-dioxide from the air and water from the to make their food in the presence of sunlight. Their food is : Glucose. Oxygen is released into the air as a by-product.
Respiration: The oxygen is released by the plants used by animals, humans and other organisms that is breathing. During respiration, organism take in oxygen and release carbon-dioxide into the air.
Repeat: This carbon-dioxide is again take up by plants for the photosynthesis.
A student sets up an experiment with two groups of bacteria. One group is exposed to the normal amount of mercury found in the environment. The other group gets a larger dose. Which term describes the normally treated group?
experimental group
control group
variable group
independent group
Answer: control group
Explanation:
The control group is the one which is used in an experimental set up as a benchmark for the comparison of the changes that occur in the experimental variable or dependent variable. It is the group which does not receive any experimental treatment. The use of a control group in an experiment increases the accuracy of the results of the experiment. It is the group which is treated normally without causing any change.
The simplest animals to have body symmetry are
A. Sponges
B. Algae
C. Cnidarians
D. Echinoderms
Answer: C.) Cnidarians
The simplest animals to demonstrate body symmetry are Cnidarians, including animals like jellyfish, anemones, and corals. They present radial symmetry, meaning any cut along the central axis gives two identical halves.
Explanation:The simplest animals to have body symmetry are Cnidarians. Body symmetry refers to the balance in size, shape, and position of an animal's body parts. Cnidarians, which include jellyfish, anemones, and corals, possess radial symmetry. This means they can be divided into two identical halves in any plane along their central axis. This is unlike Sponges which are asymmetrical, meaning they do not have an organized body plan, whereas Algae are not even considered animals. Echinoderms do have symmetry, but they are more complex animals than Cnidarians.
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one of the few examples of displacement in the animal kingdom Is? a. the waggle dance of the honey bee. b. chimpanzees being unable to suppress calls. c. juvenile beret monkey mistakes in their call systems
Displacement behavior usually occurs when an animal is torn between two conflicting drives, such as fear and aggression. Displacement activities often consist of comfort movements, such as grooming, scratching, drinking, or eating. It has been scientifically proven that the honey does a waggle dance during behavioral transitions when they are foraging.
A) the waggle dance of the honey bee is the answer.
Final answer:
Displacement in the animal kingdom is exemplified by the waggle dance of the honey bee, through which worker bees can signal the location of distant food sources to their hive.
Explanation:
One of the few examples of displacement in the animal kingdom is the waggle dance of the honey bee. This innate behavior allows worker honey bees to communicate the existence and location of a food source that is situated some distance away from their hive.
The waggle dance involves a figure-eight motion, which conveys both the distance and direction to the nectar. Moreover, bees take into consideration the movement of the sun as they perform their dance. However, it is important to note that a honey bee must have seen the nectar first in order to conduct this dance. In contrast to human language, animals typically do not communicate about things they have never seen before.
A section of a chromosome that has genetic information for one trait
Final answer:
A gene is a section of a chromosome that codes for a specific trait, with alleles being different versions of these genes, leading to variation in the traits exhibited.
Explanation:
A section of a chromosome that contains genetic information for one trait is known as a gene. Genes are specific nucleotide segments located on chromosomes that code for proteins, which in turn determine our traits, such as hair color or blood type. Homologous chromosomes are pairs of chromosomes in a diploid organism that are the same length and have genes at the same locations or loci. However, different versions of a gene, called alleles, can exist and contribute to the variations observed in traits. For example, the gene for blood type has three different alleles: A, B, and O, and the combination of alleles inherited from our parents determines our blood type.
**MULTIPLE ANSWERS**
The body has many responses to injuries, diseases and other conditions that alter its normal function. Select the statements that indicate the body's responses to an injury, such as a cut.
A) Platelets join together to form a clot.
B) Macrophages collect damaged cells and other foreign substances.
C) Red blood cells transport pathogens to the injury site.
D) If the wound is infected, fever may occur to heighten the immune response.
E) Cytokines alert the immune system to possible infection.
F) The central nervous system reduces signals from the area to decrease pain.
A, B, D, E should be the correct answers.
Hope this helps.
The statements that indicate the body's responses to an injury include the
following:
Platelets join together to form a clot.Macrophages collect damaged cells and other foreign substances.If the wound is infected, fever may occur to heighten the immune response.Cytokines alert the immune system to possible infection.During injuries, the body's immune system responds through various
mechanisms such as release of chemicals. This helps to ensure proper
healing and prevent cells from being infected.
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what do we call the chemical that cells need to work and reproduce?
cells need many chemicals, but its DNA
“E.coli can be considered a manufacturing unit in the field of genetic engineering” explain this statement.
it means E.coli can be produced in the field of work and all that
What event must occur if a nucleus containing this molecule is to undergo mitotic cell division
The event that must occur if a nucleus containing this molecule is to undergo mitotic cell division is, that the bonds at point 3 break, and the molecules replicate.
What do you mean by Mitotic cell division?Mitotic cell division may be defined as a series of steps that involve the duplication of genetic content and other cell material to produce two daughter cells from a parental one.
Mitotic cell division always duplicates the cellular as well as genetic content and synthesizes two daughter cells, each accepting one copy of the doubled material.
Therefore, the event that must occur if a nucleus containing this molecule is to undergo mitotic cell division is, that the bonds at point 3 break, and the molecules replicate.
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To undergo mitotic cell division, DNA replication during the S phase is essential, followed by the breakdown of the nuclear envelope in prophase, arrangement and separation of chromatids in metaphase and anaphase, and nucleus reformation in telophase, culminating with cytokinesis.
Explanation:The event that must occur if a nucleus containing this molecule is to undergo mitotic cell division is the replication of DNA during the S phase of the cell cycle. This is crucial because, during mitosis, the replicated DNA needs to be evenly divided between two daughter cells to ensure each has a complete set of genetic instructions. The actual process of mitosis involves several key phases:
In prophase, the nuclear envelope breaks down and the nucleolus disappears, allowing access to the chromosomes.The mitotic spindle forms and the sister chromatids coil more tightly and become visible.During metaphase, sister chromatids align at the middle of the cell, and in anaphase, they separate and move to opposite poles.Finally, in telophase, the nucleus re-forms around the now separated chromosomes.Following mitosis, cytokinesis divides the cytoplasm, resulting in two genetically identical daughter cells.
Efficiency in the steps leading up the mitotic phase is facilitated by the G₂ phase, where cells prepare by synthesizing proteins necessary for chromosome manipulation and finalizing preparations for division.
what is meristem and where is the meristem located in a plant?
Meristems are classified by their location in the plant as apical (located at root and shoot tips), lateral (in the vascular and cork cambia), and intercalary (at internodes, or stem regions between the places at which leaves attach, and leaf bases, especially of certain monocotyledons—e.g., grasses).
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Meristem, region of cells capable of division and growth in plants. A meristem is the tissue in most plants containing undifferentiated cells (meristematic cells), found in zones of the plant where growth can take place.
Jim was told that he might need to go on medication of his blood pressure continues to be high . What causes blood pressure
Acute causes of high blood pressure include stress, but it can happen on its own, or it can result from an underlying condition, such as kidney disease. Unmanaged hypertension can lead to a heart attack, stroke, and other problems. Lifestyle factors are the best way to address high blood pressure.
Blood pressure is caused by the force of blood against the walls of arteries.
What is blood pressure?Blood pressure is the measure of the force that blood exerts on the walls of arteries as it flows through them. It is essential for the circulation of blood throughout the body and for maintaining adequate blood flow to organs and tissues. Blood pressure is determined by two factors: cardiac output and peripheral vascular resistance. Cardiac output is the amount of blood the heart pumps per minute, while peripheral vascular resistance is the resistance to blood flow in the arteries. When either of these factors increases, blood pressure increases as well.
Factors that can contribute to high blood pressure include obesity, lack of physical activity, stress, smoking, excessive alcohol consumption, genetics, and certain medical conditions such as diabetes and kidney disease. Medication can help to lower blood pressure and reduce the risk of heart disease and other complications associated with high blood pressure.
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Select the correct answer.
A family has a Y-linked disease that affects the father. What is the chance of a male offspring inheriting the same disease?
A.
100%
B.
50%
C.
25%
D.
0%
Answer:
a
Explanation:
100%
Answer:
The correct answer is letter A.
Explanation:
Men have a Y chromosome and an X chromosome, while women have two X chromosomes. So, a daughter (female offspring) has the X chromosome from the father and another one similar from the mother. On the other hand, the son (male offspring) would have one X chromosome from the mother and the Y chromosome from the father, so the answer is 100%.
Which best describes how the brain processes language?
Answer:
Speech and language brain regions. The visual cortex is the part of the cerebral cortex that is responsible for processing visual information. The auditory cortex in the cerebral cortex processes auditory information and as part of the sensory system for hearing, performs both basic and higher hearing functions.
Hi! This question is missing its options, so I went online to find them and I did. The complete question with its options is:
Which best describes how the brain processes language?
1. Wernicke's area is involved in hearing; Broca's area is used for speech.
2. Until children develop the facial muscles used for speaking, they are unable to communicate.
3. A single "Communication Center" handles both verbal and nonverbal language.
Answer:
The correct answer is option 1) Wernicke's area is involved in hearing; Broca's area is used for speech.
Explanation:
Language is an ability unique to humans that helps us understand each other and communicate our thoughts and feelings with our pairs.
There are two areas involved in language processing: Wernicke's area manages hearing and Broca's area is involved in speech.
Wernicke's area is located in the temporal lobe in the dominant cerebral hemisphere, more specifically in Brodmann area 22. It is responsible for language comprehension, whether it's spoken or written.
Broca's area is located in the frontal lobe of the dominant cerebral hemisphere, it occupies the pars opercularis and the pars triangularis, which correspond to Brodmann areas 44 and 45. Broca's area is linked to the production of language.
DNA is made up of pairs of nitrogenous bases. Which of the following nitrogenous bases is paired correctly?
im pretty sure that the answer is C. Thymine-adenine
Answer:
The correct answer will be option-C.
Explanation:
DNA is made up of nucleotides which are composed of the five-carbon sugar deoxyribose, a phosphate group and four types of the nitrogenous base.
The nitrogenous base remains perpendicular to the backbone made of the sugar and phosphate. The bases bonds to each other following a rule suggested by the Chargaff.
Chargaff rule stated that purine will bind complementary pyrimidines like adenine will bind thymine and guanine will bind cytosine. Thus, Option-C is the correct answer.
Explain the relationship between crossing over and genetic variation
Answer:
Crossing over is the process by which genetic material is exchanged by non-sister chromatids during meiosis.
Crossing over results in a new combination of genetic information for the cell for a specific trait.
Crossing over ensures that organisms are not identical from generation to generation.
Genetic recombination allows for a variation in genetic material that is passed through the generations.
Explanation:
What factor or factors are considered when a cell cultures environment is made as similar as possible to a cells natural surroundings?
A. Light microscope
B. Temperature
C. Number of variables
D. Agar and Petri dish
Answer:
B. temperature
Explanation:
Temperature is a factor considered when a cell cultures environment is made as similar as possible to a cells natural surroundings
The propagation of cells outside the organism of origin is called cell culture, these techniques allow the maintenance of cells 'in vitro', maintaining their properties to the maximum under controlled conditions.
The environment of the cell culture can be influenced by the nature of the substrate (solid, semi-solid or liquid), the contact with other cells, the constitution of the medium and the temperature.
In a cell culture, the physical-chemical conditions (pH, temperature, osmotic pressure, partial pressure of O2 and CO2), and physiological conditions (hormones, growth factors, etc.) can be controlled.
To establish a defined environment, it is necessary to know precisely the nutritional needs of the cells in question.
The optimal temperature for cell culture depends mainly on the body temperature of the organism from which the cells were obtained, to obtain reproducible results, consistency in temperature must be ensured.Temperature also influences the pH of the culture medium, because at low temperatures CO2 dissolves more.Therefore, we can conclude that temperature considered when a cell cultures environment is made as similar as possible to a cells natural surroundings.
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The idea that species evolve at a slow constant rate is called
The idea that species evolve at a slow constant rate is called gradualism.
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Answer:gradualism.A policy of gradual reform rather than sudden change or revolution.
◦ BIOLOGY
the hypothesis that evolution proceeds chiefly by the accumulation of gradual changes (in contrast to the punctuationist model).
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which of the following is a cause of urbanization?
a. living in cities became more expensive than living in rural areas.
b. agricultural production became more efficient.
c. suburban homes became larger than urban homes.
d. paving over land changed the environment.
A more efficient agricultural production is a cause of urbanization (option b).
Urbanization can be defined as the process through which populations shift from rural to urban areas, thereby leading to a higher proportion of people that live in the city.When urbanization is not sustainable, it may exacerbate environmental problems that affect the quality of life of urban populations (e.g, poor air/water quality, waste disposal problems, water availability, etc).The principal causes of urbanization include:1. Industrial and manufacturing growth
2. More efficient agricultural systems/practices that reduce the employment in rural areas
3. Economic, political and social factors that lead to the migration of people to industrialized/urbanized areas
4. Modernization in the infrastructure of urbanized areas.
In conclusion, option b. agricultural production became more efficient, is one common cause of urbanization.
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Answer:
b. agricultural production became more efficient.
Explanation:
Plz plz plz give me an answer
the ray box used as a source for light - because she changes the angle of light but not the source of light.
hope this helps!!
is the flavor of the new variety of pumpkin seeds as good as the flavor of the older varieties of pumpkin seeds
A new varieties of pumpkins that I am familiar with is the "naked bear".
The hullness seeds in this pumpkin are a good roasting seed. Whether you like a pumpkin seed is all a matter of personal taste.
Which is an accurate description of the processes used to turn dna code of a gene into a protein
Answer: Transfer RNA delivers specific amino acids to the ribosome, matching messenger RNA codons.
Explanation:
what must occur before replication can begin?
Answer:
The two DNA strands must separate
Explanation:
This separation is mediated by DNA helicases enzymes. Using ATP energy, they breakdown the hydrogen bonds between the two strands of the double helices giving access of DNA polymerase to single-stranded DNA required for replication. The DNA polymerase can only bind to single-stranded DNA.
Describe how seismologists discovered that most of the mantle is solid.
The major boundaries of the Earth's interior were discovered by seismologists. In 1909, Andrija Mohorovičić, a Croatian seismologist, discovered the boundary between the crust and the mantle by observing the sudden increase of seismic waves as they passed from the crust to the mantle.
Seismologists discovered that most of the mantle is solid by evidence from seismic waves, heat flow, and meteorites.
What is the mantle?A mantle is a layer within a planet that is bordered below by the core and above by the crust. Mantles are composed of rock or ice and are the largest and most massive layer of a planet. The top and lower mantles differ little, but the lower mantle is more substantial than the higher.
Seismologists discovered the major boundaries of the Earth's interior. In 1909, Croatian seismologist Andrija Mohorovii discovered the border between the crust and the mantle by noting the dramatic increase in seismic waves as they moved from the crust to the mantle.
Therefore, proves from seismic waves, heat flow, and meteorites led seismologists to the conclusion that the majority of the mantle is solid.
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pleaseeee help ill give brainliestt and all points i have
A student makes a drawing of a carbon atom. Which of these should the student show in the nucleus of the atom? *
1 point
Ions
Protons
Electrons
Molecules
2. Which pair below describes isotopes of the same element? *
1 point
A) an atom with 6 protons and 8 neutrons - an atom with 8 protons and 6 neutrons
B) an atom with 6 protons and 6 neutrons - an atom with 6 protons and 7 neutrons
C) an atom with 8 protons and 8 neutrons - an atom with 7 protons and 8 neutrons
D) an atom with 7 protons and 6 neutrons - an atom with 6 protons and 6 neutrons
3. Which diagram best represents molecules of matter in the gas phase? *
1 point
A
B
C
D
4. All of the liquid from a test tube is poured into a beaker, as shown in the diagram below. Compared to the liquid that was in the test tube, the liquid in the beaker has *
1 point
Captionless Image
A. a different volume, but the same shape.
B. the same volume, but a different shape.
C. a different volume and a different shape.
D. the same volume and the same shape.
5. Color, shape, texture, and size are _____________ properties of matter. *
1 point
A) Chemical
B) liquid
C) physical
D) solid
6. Maggie recorded her observations of the baking soda used in lab today. Which observation indicated a chemical property of the baking soda? *
1 point
Captionless Image
A) Odor
B) Color
C) Texture
D) Bubbles
7. The pictures below represent changes observed: *
1 point
Captionless Image
A) Picture I shows a chemical change, because a new substance is formed.
B) Picture II shows a chemical change, because a new substance is formed.
C) Picture I shows a chemical change, because the same substance changes form.
D) Picture II shows a chemical change, because the same substance changes form.
8. The diagram below shows a portion of the Periodic Table of the Elements. Which element below has chemical properties similar to the chemical properties of fluorine (F)? *
1 point
Captionless Image
B
O
He
I
9. Which element below has chemical properties similar to the chemical properties of tin (Sn)? *
1 point
Captionless Image
As
In
Ge
Sb
10. Which of the following statements best explains why elements in the same family of the periodic table have similar bonding properties? *
1 point
A) The elements have similar atomic sizes.
B) The elements have similar atomic masses.
C) The elements have similar numbers of protons.
D) The elements have the same number of valence electrons.
11. When carbon and oxygen combine chemically, the mass of the product is *
1 point
A. greater than the mass of the carbon plus the mass of the oxygen.
B. equal to the mass of the carbon plus the mass of the oxygen.
C. equal to the mass of the carbon.
D. less than the mass of the carbon
12. After some wood has completely burned in a fire, some of the matter that made up the wood has been destroyed. Is the statement correct or incorrect? Explain. *
1 point
A) It is correct. The ashes weigh less than the original wood and this proves that some of the mass was destroyed.
B) It is incorrect. Ashes look different than wood but the mass of the ashes is the same as the mass of the original wood.
C) It is incorrect. Look at the ashes under the microscope. These particles will look exactly like the particles in the wood.
D) It is incorrect. Capture and collect all of the gases given off by the fire and combine these masses with the mass of the left over ashes. This should equal the mass of the original wood.
13. A copper sheet is heated in a furnace until it melts. The hot liquid copper is then cooled until it becomes solid again. Compare the mass of the copper before and after melting. *
1 point
A) The new solid copper is lighter than the original sheet.
B) The new solid copper is heavier than the original sheet.
C) The new solid copper is the same mass as the original sheet.
D) The molten copper was lighter than the sheet or the new solid.
14. Using the Law of Conservation of Matter, determine the number of grams of iron sulfide (FeS) that will be produced in this reaction.112g Fe + 64g S → _____ g FeS *
1 point
A. 48 grams
B. 64 grams
C. 112 grams
D. 176 gram
15. How many different elements are involved in the chemical reaction shown? *
1 point
Captionless Image
7
5
14
3
16. Use the diagram below to fill in each blank. Molecules of one type of compound _____ *
1 point
Captionless Image
A
B
C
D
E
Atoms of two different elements _____ *
1 point
Captionless Image
A
B
C
D
E
Molecules of two different compounds ______ *
1 point
Captionless Image
A
B
C
D
E
Mixture of one element and one compound _____ *
1 point
Captionless Image
A
B
C
D
E
Molecules of an element ______ *
1 point
Captionless Image
A
B
C
D
E
17. Which of the following is an example of a container that is filled with a pure substance rather than with a mixture? *
1 point
A) a tire filled with air
B) a jar filled with salt water
C) a balloon filled with helium
D) a glass filled with chocolate milk
1. proton
2.B
3.it will be the pic (ball were far away)
4.B
5.C
6.D
7.A
8.D
9.C
Answer:
1. proton
2.B
3.It is the photo, the ball is very far away.
4.B
5.C
6.D
7.A
8.D
9.C
What is the kinetic energy of a 155 kg object that is moving with a speed of 18 m/s? With Details.
Kinetic energy = 1/2 * mass * velocity^2 so Ke = 1/2*(155*10^3 g)*18^2 which is 25,110,000 joules.
Answer:
31,000 J
Explanation:
using KE = 1/2mv^2 (m stands for mass, v stands for velocity) we can do the math and the answer is 31,000J because the mass in the question listed is 155 kg and the velocity (aka speed) is 18 m/s.
kinetic energy (aka KE) is equal to half of an object's mass (1/2*m) multiplied by the velocity squared.
(1/2 * 155 kg) * 18 m/s^2 = 31,000J
Compare and contrast molds, casts, and trace fossils.
Compare and contrast molds and casts. Molds, casts, petrified fossils, carbon films and trace fossils. ... Mold is a hollow area in sediment in the shape of an organism and Cast a solid copy of an organism's shape formed when minerals seep into a hollow area.
Mold is a fungus that makes, multicellular filaments.
While cast fossils is when an animal dies and forms a cast fossil.
Continental drift was first proposed by scientist named Alfred
Alfred Wegener in 1912
Which is most likely a limited resource for the smaller trees. Energy. Reproduction. Shelter. Water
Limited sunlight is a key resource likely to be limited for smaller trees, due to overshadowing by larger trees. While water and nutrients may also be restricted, sunlight is crucial for photosynthesis and growth.
The most likely limited resource for smaller trees is access to sunlight. This is because trees, particularly smaller ones in densely forested areas, compete for sunlight to perform photosynthesis, which is critical for their growth and energy production. Larger trees often overshadow smaller ones, limiting their sunlight exposure. Water availability could also be a limiting factor; however, smaller trees have less extensive root systems and therefore require less water than mature trees. Additionally, nutrients in the soil are essential for tree growth, and smaller trees might struggle if they are in competition with larger trees with more established root systems. In contrast, reproduction, shelter, and defense against herbivory are unlikely to be as influential since these factors do not directly affect the immediate growth and survival of smaller trees in the same way that access to sunlight and other resources do.
Based on the food web below, which of the following is a consumer?
a herbivore? feeding on plants
Answer:
mouse , rabbit , fox
Explanation:
How are stem cells necessary for cell differentiation???
Stem cells are essential for cell differentiation due to their ability to divide and differentiate into various specialized cells, such as pluripotent human embryonic stem cells or multipotent stem cells in adult organs and tissues. During differentiation, stem cells express specific gene sets which determine their final cell type. Due to their capability, stem cells hold promising potential for treatments like cell-based therapy for various diseases.
Explanation:Stem cells are necessary for cell differentiation because they have the potential to divide and differentiate into various specialized cells. These include human embryonic stem cells (hESCs), which are pluripotent, multipotent adult stem cells found in organs like bone marrow and skin, stem cells from umbilical cord blood and baby teeth, and induced pluripotent stem cells (iPSCs) from adult stem cells.
Stem cells can differentiate into specialized cells when the physical and chemical growth conditions are altered. During differentiation, embryonic stem cells express specific sets of genes that determine their ultimate cell type. For instance, some cells in the ectoderm will express the unique gene for skin cells, thereby differentiating into epidermal cells. The differentiation process also relies on the signaling cascades of cells.
Overall, due to their capacity to differentiate into specialized cells, stem cells are considered vital potential treatment for diseases like diabetes and heart disease, where damaged or destroyed cells or tissues could be replaced using cell-based therapy, despite the myriad challenges that need to be resolved.
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What is a planned goal of the psyche mission
Answer:
The answer is 'to explore the composition of mars'