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brilliants [131]
3 years ago
10

Tion 5.

Biology
1 answer:
Sedaia [141]3 years ago
3 0

A cell membrane pump helps human cells to maintain a relatively constant sodium and potassium  concentration.

<u>Option: A</u>

<u>Explanation:</u>

Sodium potassium pump is a plasma membrane protein that utilizes energy ATP — Triphosphate Adenosine turning into ADP — Adenosine Diphosphate to deliver intracellular and extracellular sodium (NA+) and potassium (K+) ions sequentially. The purpose of this entire mechanism is to preserve cell equilibrium.

The extracellular medium has a greater concentration of Na while the K concentration of the intracellular fluid is lower. Proteins trap sodium ions in the cytoplasm and pump them out from the cells to preserve cell stability while preserving concentrations. Within the cells proteins inject potassium ions into the cell.

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Which of the following is the best definition of DNA?
mr_godi [17]

Answer:

Option B. A double-stranded molecule with coded instructions for anorganism's physical characteristics, is the correct statement.

Explanation:

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8 0
3 years ago
During a routine prenatal care visit, a pregnant woman in her last trimester of pregnancy reports that she has occasional shortn
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4 0
3 years ago
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nikitadnepr [17]
Whales are closely related to hoofed mammals with an even number of toes, such as horse, because they evolved from them. Before whales were what we know them as today, they were relatively similar to horses. They used the water to flee from predators, and they evolved slowly to heighten their swimming ability, eventually becoming modern day whales. Fish have always been aquatic animals that have gills. Whales cannot breathe underwater, so they take in oxygen the same way a horse does. Also, both horses and whales are mammals that give birth to their offspring and are warm-blooded. Fish lay eggs and are cold-blooded.

Hope this helped! Please give brainliest! :)
5 0
3 years ago
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AlexFokin [52]
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8 0
3 years ago
Read 2 more answers
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3241004551 [841]

Answer:

D. The tubes allow water and nutrients to be transported throughout

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Explanation:

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option B could possibly be right but option D is better suited.  

6 0
3 years ago
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