FREE HESI A2 BIOLOGY PRACTICE TEST

QUESTION 1

What is the primary function of the mitochondria in a cell?

a) Protein synthesis

b) Energy production

c) Cellular communication

d) Waste elimination

QUESTION 2

Which of the following is not a type of tissue found in the human body?

a) Epithelial tissue

b) Nervous tissue

c) Fungal tissue

d) Connective tissue

QUESTION 3

Which of the following is a function of the circulatory system?

a) Regulation of body temperature

b) Oxygen transport

c) Digestion of food

d) Production of hormones

QUESTION 4

What is the role of enzymes in biological systems?

a) To speed up chemical reactions

b) To store genetic information

c) To provide structural support

d) To transport molecules across membranes

QUESTION 5

Which of the following is not a component of the central nervous system?

a) Brain

b) Spinal cord

c) Nerves

d) Ganglia

QUESTION 6

Which of the following is a function of the respiratory system?

a) Filtration of blood

b) Regulation of blood sugar levels

c) Gas exchange

d) Production of bile

QUESTION 7

What is the function of red blood cells?

a) Fight infection

b) Transport oxygen

c) Produce antibodies

d) Produce hormones

QUESTION 8

What is the basic unit of heredity?

a) Chromosome

b) Gene

c) Allele

d) Nucleotide

QUESTION 9

Which of the following is a characteristic of a prokaryotic cell?

a) Presence of a nucleus

b) Presence of membrane-bound organelles

c) Single-celled

d) Larger in size compared to eukaryotic cells

QUESTION 10

What is the process by which green plants make their own food using sunlight?

a) Photosynthesis

b) Respiration

c) Fermentation

d) Mitosis

QUESTION 11

Which of the following is false?

a. Animal cells use lysosomes to break down old cells

b. Animal cells use chloroplasts to gain energy

c. Plant cells have a cell wall to maintain structure

d. All of the above are true

QUESTION 12

A child is sick. They have a body temperature that exceeds 37ºC. The body senses this and begins to sweat in order to lower the What is this an example of?

a. Positive feedback loop

b. Negative feedback loop

c. Both

d. None of the above

QUESTION 13

Cells need to use exocytosis because:

a. They need to get energy

b. They need to protect against invaders

c. They need to remove waste

d. They need to divide

QUESTION 14

Select the strand of DNA that would match this segment: ACTTGCA

a. TGAACGT

b. GACCATG

c. ACTTGCA

d. None of the above

QUESTION 15

What are the three types of muscle tissue?

a. Cardiac, spinal, stomach

b. Smooth, skeletal, cardiac

c. Neuron, epithelial, collagen

d. None of the above

Answers:

1. b) Energy production
2. c) Fungal tissue
3. b) Oxygen transport
4. a) To speed up chemical reactions
5. c) Nerves
6. c) Gas exchange
7. b) Transport oxygen
8. b) Gene
9. c) Single-celled
10. a) Photosynthesis
11. b) Animal cells use chloroplasts to gain energy
12. b) Negative feedback loop
13. c) They need to remove waste
14. a) TGAACGT
15. b) Smooth, skeletal, cardiac