Nitrogen Metabolism and Protein Turnover

Question 1

What is meant by Amino Acid Pool?

Answer 1

describes the availability, distribution and uses of amino acids.

Question 2

Which amino acid concentration is higher intracellular or extracellular?

Answer 2

Intracellular

Question 3

Are amino acids stored in the body?

Answer 3

No formal storage

Question 4

What are the main actions in stomach digestion?

Answer 4

HCL secreted by parietal cells, which activates pepsinogen-pepsin-pH2. This denatures protein. Proteins-peptides

Question 5

Which pancreatic enzyme initiates proenzyme activation cascade?

Answer 5

enteropeptidase, enzyme in conversion of trypsinogen->trypsin

Question 6

Endopeptidases help complete intestinal digestion what are?

Answer 6

chymotrypsin, elastase, carboxypeptidases (named in active form)

Question 7

In the intestinal processing which enzymes are on the brush board and complete digestion?

Answer 7

aminopeptidases and dipeptidases

Question 8

In amino acid absorption what is needed in order to cross the brush boarder?

Answer 8

Cotransport of Na+

Question 9

What is meant by transporters having limited specificity?

Answer 9

They have a limited set of amino acids for each transporter.