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Gnom [1K]
3 years ago
9

I need help with these two questions.

Biology
2 answers:
Katena32 [7]3 years ago
6 0
I don’t know 22 but I think 21 is B
Genrish500 [490]3 years ago
3 0

21 food and oxygen

22 H

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Ksju [112]

Answer:

D. Organic Matter is the correct answer

3 0
3 years ago
Which substance on the plasma membrane helps identify chemical signals from outside the cell?
cluponka [151]

Answer:

<em><u>The correct option is A) carbohydrate chain</u></em>

Explanation:

The carbohydrate chain present in the cell membrane helps determine the characteristics of the cell and it also helps to identify the chemical signals from outside the cell. Hence, option A is correct.

Other options, like option B, is not correct because the function of the cholesterol in the cell membrane is to prevent the fatty acids from sticking together. Option D is not correct because transport proteins help some molecules to move inside the cell.

6 0
3 years ago
Material is destroyed at which of these of plate boundaries ?
yKpoI14uk [10]

Convergent plate boundaries

4 0
3 years ago
A student preparing for a hike wants to pack a snack that has biomolecules that provide quickly available Energy but few excess
Valentin [98]

Answer:d

Explanation:

3 0
3 years ago
Two chemicals react in an endothermic reaction. what can be known about this reaction?
FinnZ [79.3K]
Those chemicals absorbs heat from the surrounding while reacting
6 0
3 years ago
Read 2 more answers
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