(Q).
Q: Groundwater does what to the rock beneath the ground surface? Choices: - accelerates it - creates it - boosts it - erodes it A:
(A).
erodes it

(Q).
Q: What kind of structure do purines have? Choices: - triple ring structure - single ring structure - helical stucture - double ring structure A:
(A).
double ring structure

(Q).
Q: Prokaryotic cells can only regulate gene expression by controlling the amount of what? Choices: - folding - translation - RNA processing - transcription A:
(A).
transcription