Hesi A2 2026 Biology Exam
1. Three students measured the mass of a combustion product and recorded
5.14 g, 5.16 g, and 5.17 g. The known mass is 5.30 g. How would you
describe their measurements?
A. Accurate
B. Precise
C. Both accurate and precise
D. Neither accurate nor precise
Answer: B
2. A cell is in a solution where the solute concentration is higher inside the cell
than outside. What would you expect to happen to the cell?
A. It will shrink
B. It will stay the same
C. It will swell and probably burst (hypotonic situation)
D. It will divide
Answer: C
3. Beeswax is an example of which kind of molecule?
A. Carbohydrate
B. Protein
C. Nucleic acid
D. Lipid
Answer: D
4. Dogs are part of a larger animal group, the Carnivora. What classification
level is this?
A. Class
B. Order
C. Family
D. Genus
Answer: B
5. Foods with high salt content do not have to be refrigerated. What natural
process prevents these foods from spoiling?
A. Osmosis
B. Fermentation
C. Photosynthesis
, D. Mitosis
Answer: A
6. Hemophilia is a sex-linked trait carried on the X chromosome. For a male
with hemophilia and a female carrier, what ratio of offspring is predicted to
have the disease (per your notes)?
A. 0 female : 1 male
B. 1 female : 0 male
C. 1 female : 1 male
D. 0 female : 0 male
Answer: B (see note at the end)
7. How do green plants use nitrates in the nitrogen cycle?
A. To make carbohydrates
B. To synthesize proteins
C. To release oxygen
D. To make lipids
Answer: B
8. How do RNA and DNA derive their names?
A. From the bases each contains
B. From the sugar each contains
C. From the phosphate each contains
D. From where each is found in the cell
Answer: B
9. How does an enzyme work on a chemical reaction in a substrate?
A. It adds energy to the reaction
B. It is used up in the reaction
C. It speeds up the reaction by lowering the energy needed to begin it
D. It slows the reaction
Answer: C
10. How does yeast reproduce?
A. Binary fission
B. Fragmentation
C. Budding
D. Spore formation
Answer: C
1. Three students measured the mass of a combustion product and recorded
5.14 g, 5.16 g, and 5.17 g. The known mass is 5.30 g. How would you
describe their measurements?
A. Accurate
B. Precise
C. Both accurate and precise
D. Neither accurate nor precise
Answer: B
2. A cell is in a solution where the solute concentration is higher inside the cell
than outside. What would you expect to happen to the cell?
A. It will shrink
B. It will stay the same
C. It will swell and probably burst (hypotonic situation)
D. It will divide
Answer: C
3. Beeswax is an example of which kind of molecule?
A. Carbohydrate
B. Protein
C. Nucleic acid
D. Lipid
Answer: D
4. Dogs are part of a larger animal group, the Carnivora. What classification
level is this?
A. Class
B. Order
C. Family
D. Genus
Answer: B
5. Foods with high salt content do not have to be refrigerated. What natural
process prevents these foods from spoiling?
A. Osmosis
B. Fermentation
C. Photosynthesis
, D. Mitosis
Answer: A
6. Hemophilia is a sex-linked trait carried on the X chromosome. For a male
with hemophilia and a female carrier, what ratio of offspring is predicted to
have the disease (per your notes)?
A. 0 female : 1 male
B. 1 female : 0 male
C. 1 female : 1 male
D. 0 female : 0 male
Answer: B (see note at the end)
7. How do green plants use nitrates in the nitrogen cycle?
A. To make carbohydrates
B. To synthesize proteins
C. To release oxygen
D. To make lipids
Answer: B
8. How do RNA and DNA derive their names?
A. From the bases each contains
B. From the sugar each contains
C. From the phosphate each contains
D. From where each is found in the cell
Answer: B
9. How does an enzyme work on a chemical reaction in a substrate?
A. It adds energy to the reaction
B. It is used up in the reaction
C. It speeds up the reaction by lowering the energy needed to begin it
D. It slows the reaction
Answer: C
10. How does yeast reproduce?
A. Binary fission
B. Fragmentation
C. Budding
D. Spore formation
Answer: C
