Question

If a DNA double helix is gradually heated, which bonds in the molecule will break first (are the weakest)?
A. bonds between the nitrogenous bases
B. bonds between the bases and the sugars
C. bonds between the sugar and phosphate within a nucleotide
D. bonds between the sugar and phosphate of adjacent nucleotides

i feel like this is A but i just want to make sure.

Answer 1

its a. I checked

Answer 2

When does DNA replication happen?
A. during the G1 phase of the cell cycle
B. during the S phase of the cell cycle
C. during the G2 phase of the cell cycle
D. during the mitotic phase of the cell cycle

Answer 3

When does DNA replication happen?
A. during the G1 phase of the cell cycle
B. during the S phase of the cell cycle
C. during the G2 phase of the cell cycle
D. during the mitotic phase of the cell cycle

Answer 4

The answer is A.