Answer:
the answer is b.
Explanation:
prokaryotes don't have organelles, like eukaryotes do.
Adenine, Thymine, Cytosine and Guanine.
<u>Explanation</u>
In double helix, the nitrogenous bases of opposite nucleotides form pairs through hydrogen bonds. The nitrogenous base adenine of one nucleotide forms pair with thymine of opposite nucleotide, while cytosine forms pair with guanine.
Explanation:
photosynthesis and cellular respiration make ATP, the main energy source