Question

Digested lipids enter gut epithelial cells from the gut lumen through which of the following processes? Answer any that apply.

Multiple answers: You can select more than one option

a)facilitated diffusion

b)secondary active transport

c)primary active transport

d)endocytosis

e)exocytosis

f)simple diffusion

Answer 1

The short-chain fatty acids are absorbed by simple diffusion in the small intestine.
The long-chain fatty acids are diffused into the absorbing cells of the lining of small intestine with the help of micelles. The process is facilitated diffusion. Here, these long-chain fatty acids are surrounded by bile salts to make micelles that carry them to the absorptive cells.
The chylomicrons enter the surrounding lacteals with help of exocytosis. Exocytosis is an active process of transport and uses ATP to drive the process.

Answer: Simple diffusion/ faciliatated diffusion/ Exocytosis/ Primary active transport.