Answer:
The effect of an external physical factor on cell division is clearly seen in density-dependent inhibition, a phenomenon in which crowded cells stop dividing. ... When cells have formed a complete single layer, they stop dividing (density-dependent inhibition).
Explanation:
the lowest layer odnbf
Answer: ;-; wut? i- my brain cells you just killed my brain cells in 1 sec i-
Explanation:
Convection currents are powered by:
A. Heat
B. Motion
C. Pressure
D. Density
If you’re gonna guess, do not bother commenting
7th grade Science *Earth
What can be found in prokaryotic cells?
Select all that apply.
A. DNA
B. nucleus
C. ribosomes
D. plasmids
I think all of the above but I am not quite sure... this question popped up on my unit test and I wanted to ask to make sure.
Answer:
ribosomes and DNA i never heard of the last one
Explanation:
edgeunity 2020 unit test
When the water availability of a plant's environment decreases, the plant can respond by closing its stomata. This reduces the amount of water that the plant loses through its leaves due to transpiration. Closing the stomata also reduces the amount of carbon dioxide that the plant can take in through its leaves, which will most likely result in A. a decreased rate of photosynthesis. B. no change in the cellular processes of the plant. C. an increased rate of photosynthesis. D. an increased rate of cellular respiration.
Answer:
A. a decreased rate of photosynthesis.
Explanation:
Stomata is a structure in the leaves of higher plants, which they use majorly for the purpose of gas exchange. However, the process whereby plant loses water called transpiration also occurs via the stomata. In a situation whereby the availability of water in a plant's environment is low, the plant responds by closing its stomata in order to conserve water (reduce the amount of water that the plant loses through its leaves due to transpiration).
Closing the stomata by plants means not allowing ample carbon dioxide (CO2), which is needed for the process of photosynthesis to occur, to enter the plant. This will most likely result in a DECREASED RATE OF PHOTOSYNTHESIS.
The light dependent reaction requires energy from the sun. What other reactant does this reaction require
Gestational diabetes occurs when a pregnant woman has high levels of blood sugar. Cells in the pancreas usually keep blood sugar levels normal, but hormones produced during pregnancy deactivate the cells. After pregnancy, hormone levels return to normal, and so do the pancreas cells. Is this an example of DNA or the environment controlling gene expression? Explain your answer
Answer:
environment controlling gene expression
Explanation:
Gestational diabetes generally occurs in pregnant women. The sugar level in the bloodstream becomes little high than the normal range during pregnancy. But the glucose level returns to normal after child birth.
The pancreas secrets insulin which helps to lower the blood sugar level in the body. But during pregnancy, the placenta releases some of the hormones which dilutes the effect of insulin. This is known as insulin resistance. So now the pancreas secretes more of insulin to overcome this insulin resistance for the body. Now if a woman during pregnancy does secrete more insulin, the glucose level increases in the body and the woman develops gestational diabetes.
Gestational diabetes greatly depends upon obesity and the ethnicity of the women, but a definite genetic link has not been identified.
This it is a result of the environment control gene expression.
How is cell differentiation different than mitosis?
Answer:Cell differentiation is the process by which cells specialize to achieve their required functions. In order for a cell to differentiate, it will express specific genes. mitosis produces cells that are identical to each other (clones).
Explanation:
Answer:
Though the options aren't presented to the question, I believe the correct answer is: Cell differentiation is different than mitosis, for during cell differentiation, it produces cells with different gene expressions. Meanwhile, during mitosis, it produces clones of the same genes.
Hope this helps! Happy Holidays!
The presence of which of the following organelles or structures would most likely indicate that a cell is eukaryotic and NOT prokaryotic?
a. Ribosomes
b.Plasma membrane
c.Cell wall
d.Nucleus
the correct answer is nucleus since it's only present in the eukaryotic cell
is an organism that uses the energy from the sun or inorganic substances to make its own food; it is also called a producer. is an organism that takes in or consumes other organisms to receive energy; it is also called a consumer.
Answer:
An autotroph
is an organism that uses the energy from the sun or inorganic substances to make its own food; it is also called a producer.
A heterotroph
is an organism that takes in or consumes other organisms to receive energy; it is also called a consumer.
Explanation:
An autotroph is an organism that uses the energy from the sun or inorganic substances to make its own food; it is also called a producer. A heterotroph is an organism that takes in or consumes other organisms to receive energy; it is also called a consumer.
What are autotrophs and heterotrophs?An autotroph can be referred to as an organism which uses the energy from the Sun or inorganic substances present in the environment to make its own food. These organisms are also called as producers. These organisms produce their own food through the process of photosynthesis.
Heterotrophs are the organisms which takes in or which consumes other organisms for receiving energy or as the food source. These organisms are also called as consumers. Consumers are further divided into different types on the basis of their food such as carnivores, omnivores, etc.
Learn more about Autotrophs here:
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In Units 4A and 4B, we have learned about photosynthesis and cellular respiration. Which of the following statements is true?
a. The reactants of photosynthesis are the reactants of cellular respiration.
b. Photosynthesis produces light energy while cellular respiration produces chemical energy.
c. The products of photosynthesis are the reactants of cellular respiration.
d. Photosynthesis and cellular respiration use light energy to convert to chemical energy.
Answer:
Photosynthesis converts carbon dioxide and water into oxygen and glucose. Glucose is used as food by the plant and oxygen is a by-product. 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.
match terms w definitions
Answer:
Bipolar or Polarity : B
Surface Tension: F
Capillary: C
Ion: A
Dissolving: D
Specific Heat: E
Answer:
1. Bipolar or Polarity b
2. Surface tension f
3. Capillary action c
4. Ion a
5. Dissolving d
6. Specific heat e
Explain how the farms upriver were adding to the high nitrate levels. gizmo
Answer:
Farmers were adding high nitrate levels from many large corn farms along the river. The farmers spray fertilizers that have ammonia and nitrate onto their crops. During the drought, the farmers used extra fertilizer. As rained, the ammonia and nitrate from the fertilizer were washed into the river.
In the pigs produced 10 pounds of feces that contained ammonia and nitrate. The pit is too small to obtain such large amount. When it rained the waste overflowed in to the river.
Explanation:
The drought from the week before and the large rain fall played a large part in the outcome of the annomia and nitrate exposure to water.
The farms upriver were adding to the high nitrate levels. It was because of the excessive use of fertilizers and inadequate waste disposal techniques.
What are agrochemicals?There are chemicals that are used in agriculture. It includes fertilizers, pesticides, nematicides, insecticides, etc.
How does farm upriver add nitrate?The farms upriver used to apply agrochemicals, especially the ones rich in nitrate and urea. During fewer water conditions they used to apply more. That used to remain in the soil and washed down to the river along with the rain.
The farms did not use adequate waste disposal measures and hence the wastes rich in nitrogen were washed down to the river.
Hence, these practices increase nitrate levels in the river.
To learn more about agrochemicals and fertilizers here,
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A large canyon, with a large river running through the bottom, was MOST LIKELY formed by
Answer:
the movements of rivers, tectonic activity, and erosion.
Muscles have a bunch of nuclei because they need to use the DNA in the nuclei to make the large number of proteins that they must contain, so that they can relax and contract. What other organelle might muscles need a larger than normal number of?
Centrioles, so that muscle cells can retain a rigid structure during times of heavy stress (for example: lifting a heavy weight).
Mitochondria, so that muscle cells can quickly respond to the need to relax and contract.
Vesicles, so that muscle cells can ensure water availability if there is unusually low availability of water.
Answer:
it's the Mitochondria
Explanation:
The other organelle that might muscle needs a larger than normal number of is mitochondria, so that muscle cells can quickly respond to the need to relax and contract. The correct option is b.
What are mitochondria?Mitochondria is a cell organelle that is present in both plant and animal cells. It is not present in prokaryotic cells, as prokaryotic cells do not contain cell organelles. Besides storing ATP, it also generates energy that is generated from glucose.
Muscle cells have mitochondria to accommodate this energy demand. These organelles, often known as the “power plants” of the cell, transform nutrients into the molecule ATP, which serves as a form of energy storage.
Therefore, the correct option is b. Mitochondria, so that muscle cells can quickly respond to the need to relax and contract.
To learn more about mitochondria, refer to the link:
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Describe how chimpanzees use touch to communicate.
No searching please. I already tried that and it wasn’t the answer you need for the question.
Give brainliest!
Which of the following are examples of how an animal can help a plant reproduce
Answer:
I don't see any answers to choose from, but when an animal eats a plant, travels, and then *poops* it out, the seeds are usually in the scat, thus spreading the plant and allowing it to reproduce.
Explanation:
what is meant by ecosystem diversity?
Answer:
Is the variation in the ecosystems found in a region or the variation in ecosystems over the whole planet.
Explanation:
I WILL GIVE BRAINLIEST1
Social classes is a characteristic of civilization that refers to
groups of people ranked by their place in society
people who come together to learn a trade
men and women who enjoy spending time together
citizens who vote in a similar way
Answer:
the answer is B
Explanation:
Sorry about those idiots from the other question
All volcanoes have at least one vent, or opening. Which of the following does not erupt through volcanic vents?
A. lava
B. liquid water
C. gases
D. ashes
What are the three types of osmosis? What happens during each phase?
The cell membrane controls movement of materials into and out of the cell. The following particles are moving from high concentration to low concentration and are using a carrier protein. How would you describe this type of movement across the membrane?
A. simple osmosis
B. active transport
C. simple diffusion
D. facilitated diffusion and please give a reason why you chose this answer
Answer:
B. active transport
Explanation:
Answer:
b
Explanation:
because active transport obey the concentration gradient..
4 How many genetically different kinds of gametes an individual with genotype Aabb can
produce?
a)1
b)2
c) 4
d) 8
Answer:
I believe the answer is C.) 4
A cookie recipe uses 3 cups of flour to make 15 cookies. How many cookies can you make with this recipe with 4 cups of flour. (assume you have enough of the other ingredients.)
Answer:
20 cookies
Explanation:
we are given that
three cups of flour is used to make 15 cookies
3 cups of flour is used to make=15 cookies
one cup of flour will be used used to make 15/3 cookies that will be 5
1 cup of flour is used to make =15/3=5
for 4 cups of flour we will multiply 4 on both sides
hence t will give
4 cup of flour is used to make =5*4=20 cookies
So,
According to recipe 4 cup of flour is used to make 20 cookies
How do most bacteria get food?
Answer:
Foodborne illness/contamination
Explanation:
Most dairy and meat products are at risk for having salmonella, this is why you must cook
it so you can kill the bacteria. These foods can contaminate fresh veggies that you don't cook which can cause you to get sick.
Why do you think the sugar beets are harvested in the Fall?
Answer:
Harvest deliveries are limited and controlled due to the warm weather and poor storage conditions.
Explanation:
.pls help fast
Is the fossil record complete for humpback whales? Explain your answer.
Answer:
No, the fossil record is not complete because with further fossil discoveries, and more study, it may continue to tell paleontologists how modern whales came to behave the way they do.
Explanation:
11. Coughing can expel ____ from the body.
A. mucus
B. food particles
C. phlegm
D. All of the above
Answer:
D. All of the above
photosynthesis is composed of two main parts (light-dependent and light independent)these reaction occur in different structures of the chloroplast.what is the term that best describes light independent reaction and where does it occur
a) calvin cycle, stroma
b)photosystem 1, stroma
c) photosystem 2, thylakoid membranes
d) photosystem 1 and photosystem 2, thylakoid membranes
Answer:
the answer is A Calvin cycle stroma
Can someone explain question 4?
Which of the following is a possible function of a protein
Answer: The nucleus.
Explanation:
Answer: The function of a protein is an Actin.
Explanation: These proteins provide structure and support for cells. On a larger scale, they also allow the body to move.