AP Biology MCQ 2

Question 1

Which organelle is responsible for producing ATP through cellular respiration?

Accepted Answer

Mitochondria

Answer

Mitochondria are the powerhouse of the cell, producing ATP through oxidative phosphorylation.

Question 2

DNA replication is described as semi-conservative because:

Accepted Answer

Each new molecule contains one original and one new strand

Answer

Semi-conservative means each daughter DNA molecule has one parent strand and one newly synthesized strand.

Question 3

Which type of selection favors individuals at both extremes of a trait?

Accepted Answer

Disruptive selection

Answer

Disruptive selection favors extreme phenotypes over intermediate ones.

Question 4

The Calvin cycle occurs in which part of the chloroplast?

Accepted Answer

Stroma

Answer

The Calvin cycle (light-independent reactions) takes place in the stroma of the chloroplast.

Question 5

Which molecule carries amino acids to the ribosome during translation?

Accepted Answer

tRNA

Answer

Transfer RNA (tRNA) carries specific amino acids to the ribosome, matching codons on mRNA.

AP Practice Test