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padilas [110]
3 years ago
10

My test is timed PLse answer

Biology
1 answer:
Yuri [45]3 years ago
5 0
I wanna say the answer is a 
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A proton gradient is an important part of both photosynthesis and cellular respiration.
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A proton gradient is an important part of both photosynthesis and cellular respiration because couple the favorable flow of H+ to transport specific metabolites into and out of organelles.

<h3>What is the proton gradient?</h3>

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The proton gradient produced by pumping protons during the electron transport chain is used to synthesize ATP.

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2 years ago
What will happen if external factors affect cell division in a group of cells placed in a culture dish? A) Anchorage dependence
irakobra [83]

Answer:

option B is correct

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the effect of external physical factor on cell division is clearly seen on in density dependent inhibition( a phenomenon in which crowded cell  stop dividing)

6 0
3 years ago
What is the attraction that holds two covalently bonded atoms together
frutty [35]
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The tails of the cell membrane are ____________ while the phosphate heads are ___________.
ioda
<h3>Answer:  Hydrophobic, Hydrophilic (Option 2)</h3>

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The tails of the cell membrane are __hydrophobic__ while the phosphate heads are __hydrophilic__.

I hope the following image helps to further explain the answer.

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