SCI 220 Week 3 Quiz | Full Questions and Answers | 2026 Update | 100% Correct - Nightingale College.

SCI 220 Week 3 Quiz | Full Questions and Answers | 2026 Update | 100% Correct - Nightingale
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Question 1

The identification function of the cell membrane is carried out by the:

 A. Cholesterol molecules
 B. Phospholipid molecules
 C. Glycoprotein molecules ✅
 D. Channel proteins

Answer: C. Glycoprotein molecules



Question 2

Which of the following recognize and destroy nonself cells?

 A. Gland cells
 B. Immune cells ✅
 C. Nerve cells
 D. Red blood cells

Answer: B. Immune cells



Question 3

Main cell structures include all of the following except:

 A. Organelles
 B. Plasma membrane
 C. Interstitial fluid ✅
 D. Cytoplasm

Answer: C. Interstitial fluid



Question 4

Which of the following is not true of the rough endoplasmic reticulum?

,  A. It makes lipids and carbohydrates. ✅
 B. It is made of broad, flattened sacs.
 C. It has many ribosomes attached to it.
 D. All of the above are true of rough endoplasmic reticulum.

Answer: A. It makes lipids and carbohydrates.



Question 5

Lysosomes perform autophagy. This means that they:

 A. Break down proteins and cytoplasm that are not needed by “self-eating.” ✅
 B. Are the protein-destroying organelle in the cell.
 C. Synthesize ATP.
 D. Provide an internal supporting framework.

Answer: A. Break down proteins and cytoplasm that are not needed by “self-eating.”



Question 6

Which are the organelles that allow for the recycling of amino acids in the cell?

 A. Peroxisomes
 B. Mitochondria
 C. Ribosomes
 D. Proteasomes ✅

Answer: D. Proteasomes



Question 7

Which of the following is not a function of the smooth endoplasmic reticulum?

 A. Provides a site for ribosome attachment ✅
 B. Supplies membrane for use throughout the cell
 C. Makes steroid hormones
 D. Makes glycoproteins

Answer: A. Provides a site for ribosome attachment