Quiz on passive transport and active transport

1. Which of the following is NOT the function of glycoproteins and glycolipids

• receptor molecules for hormone
• antigens for cell molecules
• stabilizes and strengthens the plasma membrane

2. Which of the molecules is small and non-polar molecules?

• Glycerol
• Oxygen
• Water

3. Movement of substances across the plasma membrane can occur through I. Carrier protein II. phospholipid bilayer III. Glycoproteins and glycolipids

• I and II
• I and III
• All of above

4. Which molecules can move across channel proteins?

• Ions such as potassium
• Vitamin A, D, E, K
• Amino acids

5. Which statement is INCORRECT about simple diffusion?

• Involves the movement of any molecules
• Requires a selectively permeable membrane
• Do not requires energy

6. Which statement is CORRECT about osmosis?

• Involves only the movement of water molecules
• Requires energy
• Molecules move against the concentration gradient

7. Facilitated diffusion involves the help of I. Channel proteins II. Proton pumps III. Carrier proteins

• I and II
• I and III
• All of above

8. Which of the following has a specific site that bind to a specific molecules?

• Channel proteins
• Carrier proteins
• Phospholipid bilayer

9. Which of the following is INCORRECT about active transport?

• Requires energy in the form of ATP
• Maintain internal concentration of small solutes
• Involves both carrier and channel proteins

10. Which situation requires active transport?

• Movement of fructose from small intestine into intestinal villi
• Gaseous exchange at the alveolus
• Reabsorption of glucose from the kidney tubules into blood capillaries