Answer:
D
Explanation:
Hormones are bigger than the cell pores hence cannot pass through the cell membrane to influence biochemical processes. Therefore, hormones (such as glucagon and insulin) bind onto receptors on the cell membrane, then transmembrane proteins, such as the G-protein, change conformation activating the secondary messengers inside of the cell. Cyclic- AMP is a major secondary messenger significant in activating protein kinases.
As the ocean becomes more acidic, what is happening to the coral reefs underwater?
A)They are growing out of control and are taking over the ocean.
B)The acid is giving them more color to camouflage from their predators.
C)They are giving the fish around them diseases.
D)They are slowly dissolving, leaving the rest of their food web without a source of food.
The rising acidity of the oceans threatens coral reefs by making it harder for corals to build their skeletons. A new study identifies the details of how ocean acidification affects coral skeletons, allowing scientists to predict more precisely where corals will be more vulnerable.
I’m pretty sure it’s B
A single-celled zygote divides many times to produce enough cells to form a multicellular organism in a process called cell
A. differentiation.
B. interaction.
C. motility.
D. proliferation.
D. proliferation, the ability to divide/reproduce rapidly
A single-celled zygote divides many times to produce enough cells to form a multicellular organism in a process called cell proliferation.
What is proliferation of zygote?A zygote is a fertilized egg cell produced by the union of a female gamete (egg, or ovum) and a male gamete (sperm).The zygote stage of human and other animal embryonic development is brief, followed by cleavage, when the single cell is subdivided into smaller cells.Through the process of mitosis, the comparatively large zygote is promptly subdivided into many smaller cells of typical size during cleavage (ordinary cell proliferation by division). These tiny cells, known as blastomeres, are ideal for use as early building blocks in the development of the future organism.learn more about proliferation here:
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What is binary fission?
In the most common mode of reproduction, fungi produce and release _______, which are involved in both sexual and asexual reproduction.
Answer:
spores
Explanation:
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Which word describes a tumor that is cancerous? A. benign B. malignant C. allergic D. none of the above
B. malignant is the correct answer
Answer:c
Explanation:
Which product do petroleum resources provide in addition to energy? plastic aggregate nickel cardboard
Plastic. (Petroleum can provide the raw material for making plastic)
Answer:
Plastic
Explanation:
Which of the following would be produced by meiosis? red blood cell cells of the stem in plants sperm cell epithelial cell
meosis cell division occurs in reproductive cells and sperm cell is one of the reproductive cells.
Answer:
The correct answer is option-sperm cell.
Explanation:
Meiosis is a type of cell division which produces cells with different genetic material. It produces different genetic material.
Since meiosis is involved in the production of four daughter cells with reduced genetic material that is 'n' from 2n parental cells, it is involved in the production of gamete cells that is sperm cells.
Thus, the option-sperm cell is the correct answer.
When will a cell have a high degree of potency?
A. After cell specialization
B. Prior to cell specialization
C. Adjacent to cell specialization
D. During cell specialization
Answer:
B
Explanation:
Cell potency is the cell’s ability to differentiate into any other specialized cell. Cells with the highest potency are stem cells that mainly found in the bone marrow. Totipotency is the higher kind of potency in which the stem cell can develop into any kind of specialized cell. The other types, in order of potency, are; pluripotent, multipotent, and unipotent.
Answer:
the person already answered
Explanation:
Match the description to the form of water that is described.
Answer:
h2o
Explanation:
two molecule of water and one molecule of oxygen in the ratio of 2:1 denotes the from of water , it is liquid in state and used for various vital purposes. its atomic number: 8 and atomic mass 16.
hope this info helps :)
How do we find the volume of the irregular object
Answer:
you can find the volume of an irregular object by immersing it in water in a beaker (or other container) with volume marks and see how much the level goes up.
Explanation:
Type a couple paragraphs about DNA describing the following:
• What were the key contributions of the scientists involved in the discovery of the structure?
• Describe the structure of DNA and what it is made of and how it is put together.
Use the following terms and underline them in your paragraphs.
James Watson
Francis Crick
Rosalind Franklin
Chargaff
Nucleotide
phosphate
deoxyribose sugar
nitrogen base
adenine
thymine
guanine
cytosine
complementary pairing
hydrogen bonding
antiparallel
supercoiled
histones
so far I have, "While James Watson and Francis Crick are credited with discovering the structure of DNA, they would not have been able to do it on their own. "
Answer:
For your first paragraph: While James Watson and Francis Crick are credited with discovering the structure of DNA, they would not have been able to do it on their own. Without photo 51, taken by Rosalind Franklin using X-ray chromatography, they would not have known that the shape was a double helix. Chargaff discovered that in DNA the number of guanine units is equal to the number of cytosine units, and the number of adenine units is equal to the number of thymine units. This hinted at the base pair makeup of DNA.
Explanation:
For your first paragraph talk about the first prompt (What were the key contributions of the scientists involved in the discovery of the structure?). Watson and Crick were given the Nobel prize for there discovery of DNA's structure but Rosalind Franklin got a picture that proved the double helix, and Chargaff discovered that adenine went to thymine, and guanine went to cytosine.
example of diffusion
Hello There!
Diffusion is the movement of molecules in a liquid from a region of high concentration to a region of low concentration.
Some examples.
Smells spread by diffusion
Cell using oxygen in reparation
Photosynthesis oxygen diffuses out of cell
Perfume is sprayed in one part of a room, yet soon it diffuses so that you can smell it everywhere. A drop of food coloring diffuses throughout the water in a glass so that, eventually, the entire glass will be colored
According to the principle of segregation, what kind of gametes can an individual with the genotype Bb produce?
A. b only
B. B and b gametes
C. B only
D. B, b, and Bd gametes
Answer:
B
Explanation:
50% B allele, 50% b allele
Answer:
Option B, B and b gametes
Explanation:
As per the principle of segregation, a chromatin containing alleles in pair (which expresses certain trait) gets separated during the cell division and lead to formation of new offspring with a varied genotype. This principle of seggregation is very important in producing diverse species from one generation to other.
Hence, option B is correct.
1. When a person does strenuous exercise, small blood vessels (capillaries) near the surface of the skin increase in diameter. This change allows the body to be cooled. Which of the following best illustrates these statements?
1Points
A
excretion
B
homeostasis
C
locomotion
D
synthesis
2. Which characteristic is shared by all prokaryotes and eukaryotes?
1Points
A
ability to store hereditary information
B
use of cellular respiration for energy release
C
use of organelles to control cell processes
D
ability to move in response to environmental stimuli
3. Which cell structures are correctly paired with their functions?
1Points
A
The mitochondria produce enzymes and ribosomes transport them.
B
The ribosomes make proteins and the nucleus stores genetic information.
C
The cell membrane makes enzymes and cytoplasm transports them.
D
The vacuole stores genetic information and chloroplasts make proteins.
4. What term describes the light-absorbing molecule that plants use to absorb energy?
1Points
A
grana
B
pigments
C
stroma
D
thylakoids
Answer: For Question Two: The answer is "to store hereditary information." If you require further explanation, please ask.
Explanation:
All prokaryotes and eukaryotes contain nucleic acids, which store hereditary information.
which organism releases oxygen into the atmosphere
The organisms that are able to perform photosynthesis that include plants, algae and cyanobacteria release oxygen in the atmosphere.
What is photosynthesis?Photosynthesis is a process that uses light energy from the sun to convert carbon dioxide and water to oxygen and glucose. The reaction is given as:
6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂
That is, CO₂ is taken up from the atmosphere and O₂ that is formed is released back into the atmosphere.
Photosynthesis is a multistep process and occurs in two phases - light-dependent reactions and Calvin cycle.
The main purpose is obtaining energy in the form of sugar. Glucose that is formed is further catabolized to give ATP, which is the main source of energy.
It occurs in the chloroplasts. The light-dependent reactions occurs in the thylakoid membrane and the Calvin cycle occurs in the stroma.
It is because of photosynthesis that plants, algae and cyanobacteria are said to be autotrophic, that is capable of producing its own food.
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Ethology is the study of
Answer:
scientific study of animal behaviour
Explanation:
The Venn diagram details some of the helpful and harmful effects of bacteria. In what ways are viruses like bacteria?
Answer: A.
Explanation:
The DNA sequence reads ACGTTCATT before a mutation occurs. After the mutation, the DNA sequence reads ATCGTTCATT. Which type of mutation occurred?
substitution
insertion
deletion
point
Hi!
It would be insersion, because an unfamiliar letter was inserted in.
Hope this helps!
The type of mutation that causes a DNA sequence which reads ACGTTCATT before a mutation occurs to read ATCGTTCATT after mutation has occurred is an insertion
MutationA mutation is an abnormal change that occurs in a the nucleotide sequence of a DNA or RNA sequence which causes a change in the original sequence of nucleotides.
Types of MutationThe types of mutation that occurs in nucleotides sequenses include:
substitutioninsertiondeletionpointIn all these types of mutation, the mutation that causes the insertion of one or more extra nucleotides in the original sequence of nucleotides is known as insertion.
In the mutation give an T is inserted in the original sequence of nucleotides.
Therefore, the type of mutation that causes a DNA sequence which reads ACGTTCATT before a mutation occurs to read ATCGTTCATT after mutation has occurred is an insertion.
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What causes the oceans to bulge near the equator compared to seawater at the poles?
A. Thermohaline circulation
B. The Coriolis effect
C. Centrifugal force
D. Convection
Answer:The answer is C. Centrifugal force
Explanation:
Answer:
The Centrifugal force makes the seawater to bulge at the equator when compared to the seawater at the poles.
Explanation:
The centrifugal force drives the earth rotation due to the bulging known as the equatorial bulging. But it is a different effect from tidal bulging.
Relatively the tidal effects are caused by the gravitational gradients that mean the differences in the gravity from one point to another point in the earth.
So centrifugal force is the reason for the bulge of seawater at the equator.
A scientist hypothesizes that the lack of chinook salmon is negatively affecting the orca population. Would this hypothesis need to be tested by another scientist in order to become a theory? Why or why not?
A) It is not done because scientist do not make mistakes.
B) It is not done because scientists do not read each other’s work.
C) It is done because peer review and the consideration of an alternative explanation should be considered.
D) It is done because peer review is not mandatory when developing a theory.
Answer: The answer is C. It is done because peer review and the consideration of an alternative explanation should be considered.
Explanation: this is the correct answer because when other scientist view other scientist work it is to indicate that the hypothesis and observations that they made is correct.
Answer:
C: It is done because peer review and the consideration of an alternative explanation should be considered.
Explanation:
I just took the test and got it right :)
Which statement best describes a human influence on the biogechemical cycles
Answer:
Increased eutrophication caused by high levels of nitrogen and phosphorous
Explanation:
which of the following statements about metallic bonds is false
A.The resulting compound has low and melting and boiling points.
B. the resulting compound has a shiny surface
C. the resulting compound is a good conductor or electricity
D. the resulting compound cannot be dissolved in water.
- Its A! they have high melting/boiling points.
Metallic bonds do have shiny surfaces (hence, the name metallic).
Metallic bonds are good conductors of electricity.
Metallic bonds cannot be dissolved in water.
The correct answer is option A.
-the resulting compound has low melting and boiling points
Answer:
The resulting compound has low and melting and boiling points.
Explanation:
Metallic bond: It is the type of bond (chemical) that hold the atoms of metal together, it forms when the electrostatic attractive force present between conduction electron and fixed positive charge metal atoms. So, metal atoms have high melting and boiling point. This means that they take lot of energy to overcome these Forces (electrostatic) during melting and boiling time.
It also describes as the sharing of free electrons between the structure of positively charged ions.
Global warming and climate change or important topics in environmental biology in what way if any should scientists contribute to the discussion on global warming and climate change?
A. The role of sciences is to present research that clearly represents their personal believes regarding the issue
B. Scientist provide sound scientific data to help society make informed decisions
C. Scientist cannot provide accurate information on environmental issues such as global warming
D. Scientist should not get involved in decisions that affect modern society
Answer: B. Scientists provide sound scientific data to help society make informed decisions.
Explanation:
Global warming is a natural phenomena which is caused by the increase in amount of greenhouse gases in the atmosphere which leads to rise in temperature worldwide. The climate is influenced by such temperature elevation it is becoming more dry and hot.
The duty of the scientists is to refer daily metrological data so as to inform the human society the change in climate due to global warming.
What happens to organisms that don’t get eaten?
Answer:
They survive and possibly reproduce.
Explanation:
Now, I would think that every organism that doesn't get eaten, would most likely keep living, reproducing and continuing the population.
Hope this helped!!!
How are the reactants represented in the chemical equation for photosynthesis?
Answer: The equation for photosynthesis states that the combination of carbon dioxide, water and light energy produces a carbohydrate (glucose) and oxygen. The chemical formula is 6CO2 + 6H2O + light energy = C6H12O6 + 6O2. ... This translates to the production of glucose and oxygen from carbon dioxide and water.
I hope this helps you
please mark my answer as brainliest
The two reactants in the chemical equation for photosynthesis are carbon dioxide and water.
What is photosynthesis?Photosynthesis is the conversion of light energy into chemical energy by green plants and other organisms. Light energy is collected and utilized by green plants during photosynthesis to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic molecules.
6CO₂ + 12H₂O --> C₆H₁₂O₆ + 6O₂ + 6H₂O is the general formula for photosynthesis.
The photosynthesis equation indicates that when carbon dioxide, water, and light energy are combined, a carbohydrate (glucose) and oxygen are produced. This leads to glucose and oxygen is produced from carbon dioxide and water.
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who is the secondary consumer in this food chain?grasses rabbits snakes hawks
Answer:
The answer could be snakes or hawks but snakes is your best bet.
Explanation:
Rabbits eat the grass(the producer) making them the first consumer but the hawks and the snakes can both eat the rabbits making then secondary consumers.
Answer:snakes
Explanation:
first grass is producer then rabbits first consumer ,
snakes then hawks
A(n) ___ forms along the boundaries where two contrasting air masses meet
I believe the answer is a front
Answer:
Air Front
Explanation:
The transition zone between two distinct air mass is known as the front. The presence of the air front in an area indicates the change in the weather pattern causing heavy rainfall, thunderstorms, hurricanes, tornadoes, and blustery wind.
This air front is mainly divided into 4 types. They are as follows-
(1) Warm air front- In this type of front, the warm air replaces the cold air mass.
(2) Cold air front- In this type of front, the cold air replaces the warm air.
(3) Occluded air front- When a warm air mass occurs in between two cold air mass, then it is known as the occluded air. It results in heavy rainfall and powerful wind.
(4) Stationary air front- When both the warm and cold air occurs simultaneously and there occurs no replacement of one another, then it is known as the stationary type of air front.
a major misconception about natural selection is that this mechanism "gives organisms what they want or need so they can adapt to an enviornment" Explain why this is incorrect.
Natural Selection is the process by which organisms with higher fitness and adaptations better suited to their environment tend to survive, while organisms with unfavorable variations do not. Natural selection works with the traits and adaptations already present in the organism, and simply selects the favorable ones.
What type of cell is prepared to live on its own?
A. Viral cell
B. Unicellular cell
C. Eukaryotic cell
D. Multicellular cell
Answer: A unicellular
Explanation: The entire body is unicellular therefore it can live on it's own
Final answer:
The type of cell that is prepared to live on its own is a unicellular cell (Option B).
Explanation:
Unicellular organisms are made up of a single cell that carries out all the functions necessary for life. In contrast, a eukaryotic cell (Option C) may be part of a multicellular organism and relies on a community of cells to survive. Viruses (Option A) are not considered living because they require a host cell to replicate. Multicellular cells (Option D) are individual cells that are part of a larger organism consisting of many cells, and they cannot live independently.
The presence of a membrane-enclosed nucleus is a characteristic of eukaryotic cells (Option B). Eukaryotic cells have membrane-bound organelles, including a nucleus, which differentiates them from prokaryotic cells which do not have a membrane-bound nucleus.
Lastly, a note on viruses: they are not considered living organisms as they are acellular, meaning they are not made up of cells. They are obligate parasites that require a host to replicate. Therefore, they cannot be categorized with cellular life such as unicellular or multicellular organisms.
Which describes the temperature for successfully sperm production
Answer:
Slightly lower than body temperature. Hope this helps.
Explanation: