Which type of biological molecule would control cell activities? A) Amino Acids.
C) Nucleic Acids.
B) Lipids.
D) Carbohydrates.

C. Nucleic Acids.

Explanation:

Nucleic acids are thus uniquely capable of directing their own self-replication, allowing them to function as the fundamental informational molecules of the cell. The information carried by DNA and RNA directs the synthesis of specific proteins, which control most cellular activities.

Did some simple research, if that's fine and I hope this is correct as it says on the sites. Have a good one :)

if you already have the answer to (a), then just work out how many periods there are in 1 minute, and that's the answer to (c).