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HESI A2 · Biology · Biology HESI A2 2024

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

Which is not a step in the water cycle?

A. Condensation

B. Transpiration

C. Nitrification

D. Absorption

Expert Explanatory Rationale

Correct Answer: Nitrification

Question 2 of 5

Which of these molecules contains glucose?

A. Proteins

B. Lipids

C. Nucleic acids

D. Carbohydrates

Expert Explanatory Rationale

Correct Answer: Carbohydrates

Question 3 of 5

Three students measured the mass of a product of combustion. They recorded measurements of 14 g, 16 g, and 17 g. If the known mass of the product is 30 g, how would you describe the students' measurements?

A. Accurate

B. Precise

C. Both accurate and precise

D. Neither accurate nor precise

Expert Explanatory Rationale

Correct Answer: Precise

Question 4 of 5

During which phase of cell division do the chromosomes replicate?

A. Prophase

B. Interphase

C. Anaphase

D. Telophase

Expert Explanatory Rationale

Correct Answer: Interphase

Question 5 of 5

Why is yeast used to make bread rise?

A. It engages in photosynthesis, which produces oxygen gas.

B. Carbon dioxide forms while yeast carries out photosynthesis.

C. Yeast carries out fermentation, producing ethanol and carbon dioxide.

D. Yeast breathes in oxygen and produces carbon dioxide through aerobic respiration.

Expert Explanatory Rationale

Correct Answer: Yeast carries out fermentation, producing ethanol and carbon dioxide.

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