Answer:
Positive feedback.
Explanation:
When a blood vessel is damaged, platelets attach and recruit more platelets to the area. These new platelets recruit even more, quickly increasing the number of platelets until the damage is sealed with a blood clot. This amplification is an example of positive feedback.
Positive feedback can be defined as the activities of the blood vessels and other organs of the body that enhances, catalyses and accelerates the clotting process until the flow of blood stops eventually.
What would happen in a vent community if the bacteria were to die?
Answer:
The bacteria are autotrophs that oxidize hydrogen sulfide in vent water to, Other processes seem to take place very slowly at vents
Explanation:
Replacing missing or damaged genes to correct a genetic disorder is known as:
O selective breeding
O genetic engineering
O natural selection
O gene therapy
Answer:
Gene therapy would be your answer :D
If estimates of an extinction rate 10,000 times greater than the background rate are correct, then what percentage of all species will be extinct by the end of this century
Answer:
25-50%
Explanation:
If the statistics are correct and if no changes are made, at the end of the century we will have about 25-50% extinction of the species of living beings that we know today. This will completely change the fauna and flora we know, as well as affect the availability of numerous resources which will impact human life in a drastic way.
For this reason, it is necessary to stimulate projects and attitudes aimed at preserving nature and the life of animals and plants throughout the planet, so that this situation can be reversed.
Which of the following is an example of when the Law of Dominance would happen?
A. BB X BB - blue
B. Bb - blue
C. bb - white
D. BB- blue
Answer:
Bb - blue
Explanation:
Is this show the dominant trait will take over for the recessive traits so the dominant trait will still be blue even though there is a recessive trait of white
The example that demonstrates an example of the law of dominance is Bb - blue.
LAW OF DOMINANCE:
According to Gregor Mendel, the law of dominance states that one allele of a gene can mask the phenotypic expression of another allele of the same gene. For example, in a gene coding for color in a particular organism. The allele for blue color (B) is dominant over the allele for white color (b). This act of dominance will only be showcased in a heterozygous genotype i.e. a combination of both blue and white allele (Bb). The phenotype of this organism will be blue because blue allele is dominant. Therefore, the example that demonstrates an example of the law of dominance is Bb - blue.Learn more at: https://brainly.com/question/2931799?referrer=searchResults
which correctly describes a genetic trait that is sex linked in humans
Answer:
sex linked trait is the one that expresses itself only in one sex.
ipt Which of these accurately describes a difference between DNA and RNA?
A. In RNA, there are no nitrogenous bases.
B. In RNA, one nitrogenous base differs from one found in DNA.
C. In DNA, there are no phosphates,
OD. In DNA, there are no sugars.
Which organelle is in plant cells but NOT animal cells? chloroplast
lysosome
centrioles
cell membrane
Answer:
Chloroplast
Explanation:
Plants Cells have Chloroplasts, plastids and central vacuoles. Animal Cells DONT have Chloroplasts.
i will mark brainliest!!!
How does a survivorship curve help to explain the reproductive strategy of a species m? Define two of the three types of survivorship curves and explain the influence of the reproductive strategy on that curve. Give an example of an animal that would have the type of curve you are describing.
What is an enzyme and what does it do for your body? Describe the word catalase in your answer
Answer: Catalase is a common enzyme, found in nearly all living organisms. It catalyses hydrogen peroxide into water and oxygen and protects organisms from free radicals It also has industrial uses to prevent certain contaminants in food and as a disinfectant for contact lenses and a cleansing agent in some other products.
Explanation:
This wasn't helpful im sorry
3. Which statement best describes why Beryllium (Be), Magnesium (Mg), and Calcium (Ca) will exhibit similar
chemical properties?
A. The elements have the same number of neutrons in the nucleus.
B. The total number of electrons present in the elements are the same.
c. The total number of protons and neutrons in the elements are the same.
D. The elements have the same number of valence electrons in the outermost shell.
D. The elements have the same number of valence electrons in the outermost shell.
they are all in group 2 , alkali earth metals , so have 2 electrons in their outer shell :)
Why do mahogany trees grow in tropical rain forests?
Answer:
Found within wet and dry tropical forests, it grows in a variety of soil types. Since the 1500s, mahogany has been a prized timber product—a building block for high-quality furniture and musical instruments—valued for its deep reddish color, durability, and beauty
Explanation:
Bobby wants to fence a rectangular area in his backyard for a garden. There is already an 18 ft. Fence on one side of the garden area. He has 44 ft. Of fencing for the other 3 sides. What is the area of the garden in square feet?
Answer:
72
Explanation:
18ft on 2 sides, 18 + 18 = 36. 44 - 36 = 8, 8/2=4.
So, you would have to do 18 x 4 which equals to 72.
Hope this helps :D
Which of the following is added to ocean water as a result of respiration?
dissolved nutrients
Carbon dioxide
minerals Oxygen
Answer:
Its CO2
Explanation:
All marine organisms use oxygen for respiration, which releases energy from carbohydrates and has carbon dioxide and water as byproducts
Dr. Drew is studying the effect of overexposure to UV radiation in mice. He discovers that mice that are exposed to high levels of UV radiation are much more likely to acquire cancer than mice that are not exposed to UV radiation. Which of the following best explains why high levels of UV radiation can cause cancer in mice?
Answer:
UV radiation can alter an organism's DNA molecules and cause mutations.
Explanation:
The penetration of Ultraviolet radiation into the mice will react with the DNA bases thereby causing oxidation of DNA.
However, during replications, the reactions between ultraviolet radiation and DNA bases usually fails to pair normally, hence, a mutation occurs. This is otherwise known as Oxidative mutations.
Hence, in this case, the correct answer is "UV radiation can alter an organism's DNA molecules and cause mutations."
Please please guys I need help for this all question in biology.
What complementary strand of DNA would be produced from the strand of.
DNA shown below?
TCG GA
A. ACG GT
B. AGC CT
C. TGC CT
O D. TGA CT
SUBMIT
Answer:
B. AGC CT
Explanation:
A and T are complementary, as well as C and G.
So, from the strand, we can find the complementary one by finding the complementary bases.
TCG GA will have the complementary strand of AGC CT, using the complementary base pairs.
So, B is the correct answer.
Which mutated mRNA codon would most likely lead to a change in the expression of the protein
Answer:
It’s 3
Explanation:
Sorry for being so late mate
Answer: 3
Explanation: i took the test
I need this in as soon as possible, any help?
Answer:
Explanation:
1. The processes of diffusion in diagram A and B is that one side of the membrane is hypertonic. The other side is hypotonic. Based on this, Diagram A shows that the one space has no solute particles causing the particles to move against gradiation. The movement is shown in Diagram B. This process is used to equalize the solute particles in the solution.
2. In the diagram C, we can see that enough particals have moved over to the other side, or against the concentration gradient. The solution is now isotonic or equilibrium.
The three vehicles shown below are all traveling at a speed of 15 m/s, but only the pickup truck has a changing velocity. The pickup truck has a changing velocity because the pickup truck-?
A. can accelerate faster than the other two vehicles
B. is travelling in the opposite direction from the other two vehicles
C. is travelling on a curve in the road
D. needs a large amount of force to move
Answer:
C. Is travelling on a curve in the road.
Explanation: the two vehicles behind the truck is moving at a constant speed because there is no change in velocity. The truck is changing directions AND speed (Acceleration/Velocity).
The pickup truck has a changing velocity because the pickup truck- truck is travelling on a curve in the road.
What is velocity?Velocity is the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and as measured by a particular standard of time (e.g. 60 km/h northbound).
Velocity is a fundamental concept in kinematics, the branch of classical mechanics that describes the motion of bodies. Velocity is a physical vector quantity; both magnitude and direction are needed to define it.
The scalar absolute value (magnitude) of velocity is called speed, being a coherent derived unit whose quantity is measured in the SI (metric system) as metres per second (m/s or m⋅s−1).
Therefore, The pickup truck has a changing velocity because the pickup truck- truck is travelling on a curve in the road.
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How would a functional sociologist view the Burqa?
Answer:
A conflict sociologist would most likely view the Burqa as a sign of “power over women” or inequal rights. Since it is only women that are required to wear it, it could be viewed as men being superior.
The Burqa is a veil that is used to cover the whole face, leaving only a little opening for sight and is worn by women. It is usually associated with the people of Islamic faith.
A functional sociologist is a person from the school of thought that believes that society is a complex system that each part must work together for a better functioning society.
Therefore, a functional sociologist will most likely view the Burqa as:
A restrictive clothing that should be abolishedA cruel way to treat womenA symbol of control over a womanRead more here:
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a single cell goes through the Cell Cycle once, how many total daughter cells will be produced?
a. 0
b. 1
c. 2
d. 4
Answer: D. 4
Explanation:
The parent cell undergoes one round of DNA replication followed by two separate cycles of nuclear division. The process results in four daughter cells that are haploid, which means they contain half the number of chromosomes of the diploid parent cell.
PLEASE HELP IT IS AN EMERGENCY!!!!!!!!!!!!!!
How are the chemical products made in cellular respiration related to photosynthesis? Explain in complete sentences.
(This is 7th grade science).
Answer:
Photosynthesis converts carbon dioxide and water into oxygen and glucose Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by products and ATP is energy that is transformed from the process.
Explanation:
What organelle is missing from the red blood cells?
Answer:
The correct answer is - they lack a nucleus, DNA, and organelles like the endoplasmic reticulum or mitochondria
Explanation:
Red blood cells are considered as the cells, carry oxygen with the help of hemoglobin protein present in it to the various parts of the body from the lungs and carry CO2 back to the lungs.
These cells are different from the normal cell as they do not participate in the protein synthesis due to the fact that they lack various cell organelle and cell components required. Nucleus and DNA are major components or organelle missing from these cells. In addition to these two, endoplasmic reticulum and mitochondria also missing from RBCs.
Which sentence describes the shapes of substrates and the active sites of enzymes?
A. They are both concave.
B. They are identical.
C. They are complementary.
D. They are both convex.
HELP
they are both concave
Explanation:
they are both concave
Answer:
C. They are complementary
Explanation:
The active site is concave to accomodate the unusual shapes of the substrates, which are designed to fit solely in their designated active site. (This is the concept of specificity of reaction) Therefore, they complement each other.
A researcher noticed that a similar CH2 molecular structure was also located in the plasma membrane of an animal cell. This CH2 molecular structure contained a negatively charged phosphate group. Which statement BEST describes the primary function of the CH2 and phosphate molecular structure located in the plasma membrane?
A. It contains the genetic information needed for protein production.
B. It catalyzes specific chemical reactions in the cytoplasm of a cell.
C. It stores the energy that a cell needs to perform various life processes.
D. It allows a cell to regulate the movement of materials into and out of a cell.
Answer:
it allows a cell to regulate the movement of materials into and out of a cell.
Answer:
D. It allows a cell to regulate the movement of materials into and out of a cell.
Explanation:
I got it right on my test.
Help me PLEASE! Choose one answer! First one to answer get Brainliest!
4.)These are parts of the body that exhibit similar form but serve a different function in different animal species
A.) Vestigial Structures
B.) Homologous Structures
C.) Embryo
D.) Fern
Answer: Homologous Structures
Explanation:
Explain how you linked the predator and its prey to a specific environment.
PLS HELP!!!! ASAP!!!!!!! EDGENUNITY!!
Answer:
The mouse and shrew bones were common to all three owls so they were not useful in identifying environments. The gopher bones were unique to the great grey owl of Alaska. Gophers are rodents that are successful in areas with soft soil and lots of grass, so the gopher and this owl would be found in the meadows and evergreen forests of Alaska. The bat was unique to the barking owl of Australia. The bat would be found in woodland habitats where there are many trees the bat can hang from. The gull bones were unique to the short-eared owl of Cuba. Gulls are wetland birds, so the gull and this owl would be found in marshes and coastal areas.
Explanation: took the assignment.
Which organelle in plant cells creates pressure that maintains the shape of the cell
Answer:
Cell Wall is responsible to maintain the shape of the cell.
Explanation:
scientists infer that oxygen first began to enter Earth's atmosphere after the appearance of
Oxygen entered the Earth's atmosphere after the appearance of the Great Oxidation Event (Great Oxygenation Event). The Great Oxidation is the first mass extinction on Earth.
The Great Oxidation lasted 2.4 to 2.0 billion years ago.
Oxygen appeared on Earth thanks to cyanobacteria using photosynthesis.
Oxygen first began to enter Earth's atmosphere after the appearance of cyanobacteria.
The ability to generate oxygen via photosynthesis likely first appeared in the ancestors of cyanobacteria. These organisms evolved at least 2.45–2.32 billion years ago, and probably as early as 2.7 billion years ago or earlier.Why cyanobacteria was important for evolution?Cyanobacteria carry out oxygen-evolving, plant-like photosynthesis. Earth's oxygen-rich atmosphere and the cyanobacteria origin of plastids in plants are the two major evolutionary contributions made by cyanobacteria. Certain cyanobacteria are able to carry out nitrogen fixation.To know more about evolution here
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Help ASAP please!! it’s due today lol
Answer:
I wrote all of this on the thing, but it wouldn't work. Here is the PDF I did. Good Luck.
Explanation:
