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gtnhenbr [62]
4 years ago
15

Paramecium, possess ___________ that help counteract the effects of osmosis. A) oral grooves B) ciliated pellicle C) contractile

vacuoles D) micro and macro nuclei
Biology
1 answer:
butalik [34]4 years ago
4 0

Answer:

C

Explanation:

Contractile Vacuoles are a cellular structure that regulates osmosis.

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Answer:

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the..... are only found in animal cells

8 0
3 years ago
Which of the following is most critical for the association between histones and DNA?
Strike441 [17]

Answer:

The correct answer is - Histones are positively charged.

Explanation:

Histone is an octamer that is made up of four proteins and each protein has 2 copies. These proteins are H2A, H2B, H3, and H4. Histone proteins are mainly made up of positively charged amino acids like arginine and lysine which gives histone proteins an overall positive charge.

This positive charge of histone plays important role in the binding of DNA around it because phosphate group present in the DNA makes DNA negatively charged molecules that are attracted by positively charged histone protein by electrostatic interaction.

This interaction results in the wrapping of DNA around the histone proteins and then compaction of DNA into chromatin. Therefore the right answer is- histones are positively charged.

8 0
3 years ago
A teacher is demonstrating that the boiling point of water does not change with water volume.
jeka57 [31]

Answer:was the answer

Explanation:

4 0
3 years ago
How is it possible that species continued to go extinct in the months that followed the asteroid impact?
Vikki [24]
Because the food chain was messed up.
4 0
3 years ago
What describes the conversion of ADP to ATP?
vlada-n [284]

Answer:

ATP stands for adenosine triphosphate, where three phosphoric acids attach themselves to provide high energy phosphate groups to it. This process of conversion of ADP to ATP is called as phosphorylation.

Explanation:

5 0
3 years ago
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