BI-1830
The digestive system
Biology · Secondary 4 · Easy · The digestive system
A villus in the small intestine absorbs amino acids into the blood.
Which part of the villus directly takes up amino acids using transporter proteins in its cell membranes?
Which part of the villus directly takes up amino acids using transporter proteins in its cell membranes?
- The epithelial cells on the surface of the villus
- The muscle cells in the villus wall
- The red blood cells inside the capillary
- The cells lining the central lacteal
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