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HESI RN · HESI Biology · Biology Practice Test

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

What is located on the rough endoplasmic reticulum?

A. Microvilli

B. Mitochondria

C. Lysosomes

D. Ribosomes

Expert Explanatory Rationale

Correct Answer: Ribosomes

Question 2 of 5

Where can ribosomes be found inside a cell?

A. Attached to the endoplasmic reticulum (ER) and in the cytoplasm

B. Within the cellular membrane

C. Attached to the Golgi apparatus and in the cytoplasm

D. Within the nucleus

Expert Explanatory Rationale

Correct Answer: Attached to the endoplasmic reticulum (ER) and in the cytoplasm

Question 3 of 5

DNA and RNA are both subunits of which biological molecule?

A. Nucleic acids

B. Proteins

C. Carbohydrates

D. Lipids

Expert Explanatory Rationale

Correct Answer: Nucleic acids

Question 4 of 5

Which of the following processes produces nicotinamide adenine dinucleotide (NADH) and flavin adenine dinucleotide (FADH2) for the electron transport chain during cellular respiration?

A. Electron transport chain

B. Glycolysis

C. Citric acid cycle (the Krebs cycle)

D. None of these

Expert Explanatory Rationale

Correct Answer: Citric acid cycle (the Krebs cycle)

Question 5 of 5

Which of the following organelles is the site of cellular respiration?

A. Nucleus

B. Mitochondria

C. Lysosomes

D. Ribosomes

Expert Explanatory Rationale

Correct Answer: Mitochondria

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