Protein Digestion and Absorption

Where do we absorb the nutrients into the bloodstream for circulation?

• enterocyte

• goblet cell

• capillary

• microvolli

Which part of an amino acid determines its unique identity and properties?

• Amine group

• Carboxylic acid group

• Alpha carbon

• R-group

Where does the initial digestion of proteins primarily occur?

• Small intestine

• Stomach

• Liver

• Pancreas

What are the products of protein digestion by pepsin and pancreatic proteases?

• Only individual amino acids

• Only small peptides

• Individual amino acids and small peptides

• Large protein fragments

Where is the sodium potassium pump found and what does it use to pump sodium out and potassium in?

• Luminal Membrane / NAK

• Luminal Membrane / ATP

• Basal Membrane / ATP

• Basal Membrane / NAK

What type of active transport mechanism is primarily responsible for the absorption of individual amino acids into enterocytes from the small intestine's lumen?

• Primary active transport

• Secondary active transport

• Tertiary active transport

• Simple diffusion

True / False: Every peptidases gets broken down before entering the capillary.

• True

• False

How are amino acids primarily transported from the intestinal lumen into the enterocyte?

• Through primary active transport, directly using ATP.

• Via facilitated diffusion, moving down their concentration gradient.

• Through secondary active transport, coupled with sodium movement.

• By simple diffusion across the cell membrane.