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Aliun [14]
3 years ago
10

A cell membrane that allows only certain substances to enter or leave it

Biology
1 answer:
irina [24]3 years ago
3 0
That would have to be the cell membrane an animal cell
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A student removes an algae cell from its marine environment and puts it into a sample of freshwater. What will happen to the siz
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The size of the algal size will increase or swell when a student removes an algal cell from its marine environment and puts it into a sample of freshwater.

Tonicity refers to the concentration of a solution compared to another solution. A solution is said to be hypertonic, if it has a greater concentration of solutes than the other solution. A solution is said to be hypotonic, if it has a lower concentration of solutes than the other solution. A solution is said to be isotonic, if it has the same concentration of solutes as of the other solution.

In a marine environment, the algal cells are said to be hypertonic with a higher concentration of the solutes than the freshwater. When such a cell is placed in freshwater with hypotonic environment, the concentration of solutes in the cell is higher than the external environment. In other words, it has lesser water molecules in it. As a result, osmosis occurs which is the movement of water molecules from a region of its higher concentration to a region of its lower concentration through a semipermeable membrane and water enters the cell from the freshwater. Thus, increasing the size of the algal cell or the algal cell swells.

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Construct an explanation to predict the type of symbiotic relationship that exists between the hippo and oxpecker birds?
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<h2>Answer:</h2>

<h2><em><u>The hippopotamus and the oxpecker bird are in a mutualistic and parasitic relationship. This is because the oxpecker bird gets food and protection from the hippopotamus. However, the bird gets food by making little cuts in the hippopotamus to obtain insects. This isn't entirely harmful to the hippopotamus though.</u></em></h2>

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How is it possible that the F2 generation offspring had some short plants when the F1 generation had no short plants on Mendel's
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Please please please please please ​
Contact [7]
Your answer is B for your question
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The answer to this question would be: <span>During anaerobic respiration, lactate levels increase when muscles cells need more energy. However, muscles cells eventually fatigue, thus athletes should modify their activities to increase aerobic respiration.

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