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HESI A2 · Biology · HESI A2 Biology Practice Test 2024

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

How many chromosomes do sperm and egg produce in meiosis?

A. 46

B. 23

C. 45

D. 24

Correct Answer: 23

Question 2 of 5

What are plasma membranes mostly made of?

A. Proteins

B. Carbohydrates

C. Lipids

D. Nucleotides

Correct Answer: Lipids

Question 3 of 5

What organelle pushes water out of the cell?

A. Lysosomes

B. Vacuoles (contractile)

C. Mitochondria

D. Nucleus

Correct Answer: Vacuoles (contractile)

Question 4 of 5

What is the main function of the cell membrane?

A. Energy production

B. Communication

C. Protein synthesis

D. Waste removal

Correct Answer: Communication

Question 5 of 5

Where is the site of cellular respiration in eukaryotic cells?

A. Nucleus

B. Chloroplasts

C. Mitochondria

D. Ribosomes

Correct Answer: Mitochondria