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butalik [34]
3 years ago
11

Why fresh water protozoa bear contractile vacuole?

Biology
1 answer:
Lerok [7]3 years ago
4 0

Answer:

It lacks a wall thus use the contractile vacuole to collect and expel excess water from the cell.

Explanation:

  • The contractile vacuole regulates the quantity of water inside a cell through a process known as osmoregulation.Osmosis constantly drives water in the cell since it is enclosed by a semipermeable membrane that can not keep the water out thus it is needed to prevent rupturing of the cell due to excess water in the cell.
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PLEASE HELP WILL GIVE BRAINLIEST IF CORRECT
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Answer:

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Explanation:

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7 0
3 years ago
Which of the following statements is false? The inflammatory response can occur on the surface of the body and internally. Phago
Dafna11 [192]

Which of the following statements is false? The inflammatory response can occur on the surface of the body and internally. Phagocytes are responsible for much of the healing that occurs with inflammation. Platelets release a growth factor that stimulates endothelial cells to divide, and the wound heals. Pus is produced during an inflammatory response that is inappropriately strong. Mast cells release propagandist, which are partly responsible for the pain of inflammation.

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7 0
3 years ago
A biologist has been studying two populations of trout in Montana for the last 25 years, when the two populations were establish
ludmilkaskok [199]

Answer:

Positive natural selection.

Explanation:

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8 0
3 years ago
What is the primary product of light independent reactions
SOVA2 [1]

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a)  two G3P molecules

b)  three ADP

c) two NADP+

However ADP and NADP+ are not really "products". They are regenerated and later used again in the Light-dependent reactions.  Each G3P molecule is composed of three carbons.

For the Calvin cycle (Light independent cycle) to continue, 5 out of  the 6 carbons provided by the two G3P molecules are used to regenerate ribulose 1, 5 phosphate. Therefore there  remains only one carbon for the next turn of the cycle.

One  molecule of glucose requires 6 turns of the cycle. Any extra G3P is used to make starch, sucrose and cellulose.



7 0
3 years ago
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myrzilka [38]

Explanation:

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7 0
3 years ago
Read 2 more answers
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