HESI Biology Practice Test Questions and Answers

HESI Biology Practice Test Questions
and Answers

Of all the molecules that are significant to biology, which of the following are
considered the most important?

A. Carbohydrates, lipids, protein, and nucleic acids

B. Carbohydrates, lipids, protein, and calcium

C. Carbohydrates, lipids, protein, and sulfur

D. Carbohydrates, lipids, protein, and iron - ANSWER-A. Carbohydrates, lipids,
protein, and nucleic acids

Lipids are better known as fats, but what are they specifically? (Select all that apply)

A. Fatty acids
B. Phospholipids
C. Ketones
D. Steroids - ANSWER-A. Fatty acids
B. Phospholipids
D. Steroids

What are the two categories of fatty acids?

A. Trans fat and saturated fats
B. Trans fat and unsaturated fats
C. Saturated fats and unsaturated fats
D. Saturated fats and polyunsaturated fats - ANSWER-

How do phospholipids function in cells?

A. They are integral components of the nuclear membrane?

B. They are integral components of the cytoplasmic skeleton

C. They are integral components of the mitochondrial membranes

D. They are integral components of the plasma membrane - ANSWER-

Which of the biologic molecules are considered the most significant contributor to
cellular function?

A. Carbohydrates
B. Lipids