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Alex73 [517]
2 years ago
12

I need help on this please ASAP

Biology
2 answers:
ad-work [718]2 years ago
7 0

Answer:

Where is the question?

Explanation:

Brilliant_brown [7]2 years ago
6 0

Answer:

What's the question? Its not written here

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photosynthesis and cellular respiration both use electron transport chains. what is the source of electrons for photosynthesis a
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Water serves as an electron source in the electron transport process of photosynthesis. The electron is extracted from water by using solar energy.

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6 0
1 year ago
Adenine in DNA is complementary to
vesna_86 [32]

Answer:

DNA is also called deoxyribonucleic acid which is made up of two chains which wind around each other to form a double helix model. The 2 DNA strands are also called polynucleotides and they are made up of monomeric units known as nucleotides. These nucleotides are made up of one of four nitrogen-containing nucleobases: cytosine, guanine, adenine and thymine, a phosphate group, and sugar known as deoxyribose.  

Nitrogen bases present on the two separate polynucleotides strands are bound together with the help of base pairing (such as adenine with Thymine) and with hydrogen bonds to form double-stranded DNA.

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