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AfilCa [17]
2 years ago
5

which macromolecule carries out many of the functions in the cell, including catalyzing chemical reactions, transporting molecul

es, and providing structure to the cell?
Biology
1 answer:
Bess [88]2 years ago
8 0
The cytoplasm I think
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Ps.The answer is B,
VMariaS [17]

Answer  A

Explanation:

8 0
2 years ago
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What pulls the chromosomes apart in anaphase?
VLD [36.1K]

Answer:

D. Spindle Fibers

Explanation:

During anaphase, the centromeres of each chromosome split and the mitotic spindle pulls the sister chromatids apart.

4 0
2 years ago
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Being dipole allows water molecules to do some pretty spectacular things. Describe at least one property the occurs because of t
Roman55 [17]

The polarity of water enables it to serve as a solvent for polar substances.

A polar substance is a substance that has a positive end and a negative end. Water itself is a polar substance and this polarity enables it to dissolve polar substances.

For instance, HCl dissolves in water because it is polar. The positive end of the dipole in HCl attaches to the negative end of the dipole in water and the negative end of the dipole in HCl attaches to the positive end of the dipole in water.

This dipole - dipole interaction accounts for the dissolution of HCl in water.

Also, ion - dipole interaction accounts for the dissolution of ionic substances such as NaCl in water.

Learn more: brainly.com/question/10904296

3 0
2 years ago
In the alveolus pictured above, a disease or
Inessa [10]
<h2><u>Full Question:</u></h2>

In the alveolus pictured above, a disease or injury to which structures would reduce the ability of oxygen to diffuse from the alveolar space to the capillary?

A. A and B

B. B and C

C. B and D

D. A and D

<h2><u>Answer:</u></h2>

The correct answer is option D.

<h3><u>Explanation:</u></h3>

Alveoli is defined as the unicellular thickened sac like structure of lungs which helps in exchange of gases in lungs. The exchange membrane of lungs comprise of three structures -

A. The epithelium cells of Alveoli,

B. The basement membrane of alveolar epithelium,

C. The endothelial layer of blood capillary.

The red blood cells described here won't cause any problems to the diffusion of gases from alveolar cavity to blood. The structures mentioned here as the type 2 cells of Alveoli which secrete lecithin, a surfactant which releases the surface tension of Alveoli. This compound prevents the Alveoli from collapsing and helps in diffusion of gases. The other structure mentioned here as D are the alveolar epithelium which is the unicellular thickened membrane of Alveoli, helping in gaseous exchange.

4 0
3 years ago
D
german

Given what we know about nutrition, we can confirm that the runner's meal would have to contain 30 grams of protein.

The runner in question wishes to complete a two-hour run while expending 4kcal or calories <u><em>per minute</em></u>, for a total of 480kcal. Furthermore, the runner wishes for only 25% (120kcal) of this energy to come from a source of protein.

Since <em><u>every gram of </u></em><em><u>protein </u></em><em><u>adds </u></em><em><u>4 calories </u></em><em><u>of energy to the meal</u></em>, and we have to account for 120 calories, the runner will have to consume 30 grams of protein to achieve the desired results.

To learn more visit:

brainly.com/question/1156426?referrer=searchResults

7 0
2 years ago
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