ATI Biology 2

Question 1

Which organelle is the primary site of ATP production in eukaryotic cells?

Accepted Answer

Mitochondria

Answer

Mitochondria generate most cellular ATP through oxidative phosphorylation.

Question 2

During which phase of mitosis do sister chromatids separate and move to opposite poles?

Accepted Answer

Anaphase

Answer

In anaphase, sister chromatids are pulled apart toward opposite spindle poles.

Question 3

What molecule carries amino acids to the ribosome during translation?

Accepted Answer

tRNA

Answer

Transfer RNA delivers specific amino acids matching the mRNA codon.

Question 4

Which of the following best describes a hypertonic solution relative to a cell?

Accepted Answer

Higher solute concentration outside, water leaves the cell

Answer

In a hypertonic environment water moves out, causing the cell to shrink.

Question 5

What is the complementary DNA base pairing for the sequence A-T-G-C?

Accepted Answer

T-A-C-G

Answer

Adenine pairs with thymine and guanine pairs with cytosine.

HESI (ATI) Practice Test