57
AssignmentMultiple Choice

Lab: Diffusion Across a Semi-permeable Membrane

Question 57 • HVA 26-27 IM Biology A

Based on what you learned in the lab, why does your body need to break down starch into glucose?

Answer
A
Starch contains more energy than glucose.
B
Starch molecules are too large to diffuse into cells.
C
Glucose molecules are larger than starch molecules.

Explanation

Starch is a large molecule, so it cannot diffuse through cell membranes and enter cells as it is. Digestion breaks starch into smaller glucose molecules, which cells can take up and use for energy. So the correct choice is “Starch molecules are too large to diffuse into cells.”

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