Multiple choice

Different methods of transport are used to absorb different nutrients. Which is true:

  1. Water is absorbed by active transport

  2. Fatty acids are co-transported with Na+ by active transport

  3. Glucose is co-transported with Na+ by active transport

  4. Lipids are absorbed by active transport
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Glucose is absorbed into the epithelial cells of the small intestine via secondary active transport (co-transport) with sodium ions (Na+). Water is absorbed passively by osmosis, and lipids/fatty acids generally cross the membrane via simple diffusion.

Keep practicing — related questions