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V125BC [204]
3 years ago
5

Which of the following statements are true of the cell wall?

Biology
1 answer:
marta [7]3 years ago
8 0

The answer is B because:

Cell walls are made of cellulose and proteins (hence II).

Animal cells don't have cell walls (only cell membrane) but plant cells do so IV

They must be semipermeable since materials for example carbon dioxide and water for photosynthesis have to go into the cell <em>some</em> way.

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Which component of whole blood is primarily responsible for maintaining the pH of blood and body tissues within normal limits?
vredina [299]

Answer:

Plasma.

Explanation:

Plasma is the liquid component or constituent of the blood after the removal of all the cells and platelets. It is composed of 90% water, coagulation factors like antibodies, electrolytes, proteins , lipids e.t.c which help to maintain the blood PH and osmotic balance of the blood during the process of giving viscosity to the blood. The plasma comprises of 55% of the blood.

7 0
3 years ago
Pretend you are a lung. The behavior of your body has not been very healthy and as a result you are sick. Write a plea to your b
Goshia [24]

i'm too lazy to write that down for you but i can help you with a few points. Those are(i am relating this case to smoking):

>delicate lining of the lungs is damaged.

>cilia in the lining is damaged.

>since,cilia number is low, the lungs do not get cleaned often.

> spasms in the bronchi of the lungs, causing difficulty breathing.

>damaged lungs being much harder and more brittle.

3 0
4 years ago
Describe how finches of the Galapagos Islands adapted over time.
konstantin123 [22]

Answer:

Darwin observed the Galapagos finches had a graded series of beak sizes and shapes and predicted these species were modified from one original mainland species.

Darwin called differences among species natural selection, which is caused by the inheritance of traits, competition between individuals, and the variation of traits.

Offspring with inherited characteristics that allow them to best compete will survive and have more offspring than those individuals with variations that are less able to compete.

Large-billed finches feed more efficiently on large, hard seeds, whereas smaller billed finches feed more efficiently on small, soft seeds.

When small, soft seeds become rare, large-billed finches will survive better, and there will be more larger-billed birds in the following generation; when large, hard seeds become rare, the opposite will occur.

8 0
3 years ago
Which molecules are used to create the biomass of our cells ????
aksik [14]

Answer: The glucose molecules serve as fuel for cells: their chemical energy can be harvested through processes like cellular respiration and fermentation, which generate adenosine triphosphate— ATPstart text, A, T, P, end text, a small, energy-carrying molecule—for the cell's immediate energy needs. Fixed carbon.

Explanation:

7 0
3 years ago
Read 2 more answers
Glucose is generally phagostimulatory (stimulates eating) for animals.<br><br> a. True<br> b. False
KengaRu [80]

Answer: True.

Explanation:

8 0
3 years ago
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