A) DNA replication - DNA replication is the first process of cell division. DNA replication occurs in the S-phase of cell interphase.
Essential because not all bacteria are harmful and we need bacteria in our daily lives
Answer:
A phosphate backbone is the portion of the DNA double helix that provides structural support to the molecule. DNA consists of two strands that wind around each other like a twisted ladder. Each strand has a backbone made of alternating sugar (deoxyribose) and phosphate groups. Attached to each sugar is one of four bases--adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.
Answer: Your best answer is <u>A. regulates breathing and heart rate</u>
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