Free HESI Biology Questions and Answers

Question 1

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

Accepted Answer

Energy production

Answer

Protein synthesis

Answer

Genetic information storage

Answer

Cell division

Question 2

Which organ system is primarily responsible for transporting nutrients and oxygen?

Accepted Answer

Circulatory system

Answer

Digestive system

Answer

Respiratory system

Answer

Excretory system

Question 3

Which macromolecule is responsible for storing genetic information?

Accepted Answer

Nucleic acids

Answer

Carbohydrates

Answer

Proteins

Answer

Lipids

Question 4

What part of the cell regulates what enters and leaves the cell?

Accepted Answer

Cell membrane

Answer

Nucleus

Answer

Cytoplasm

Answer

Cell wall

Question 5

Which organelle is responsible for protein synthesis?

Accepted Answer

Ribosome

Answer

Golgi apparatus

Answer

Lysosome

Answer

Mitochondrion

Question 6

What process do plants use to make their own food?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Fermentation

Answer

Digestion

Question 7

Which of the following is a characteristic of prokaryotic cells?

Accepted Answer

Lack membrane-bound organelles

Answer

Have a nucleus

Answer

Contain mitochondria

Answer

Are multicellular

Question 8

Which term describes the maintenance of a stable internal environment?

Accepted Answer

Homeostasis

Answer

Equilibrium

Answer

Metabolism

Answer

Diffusion

Question 9

What is the role of enzymes in biological reactions?

Accepted Answer

Act as catalysts

Answer

Slow down reactions

Answer

Provide energy for reactions

Answer

Break down DNA