Exam 6: Protein

What is the current Tolerable Upper Intake Level established for protein and amino acids?

What organ serves as the primary site of amino acid metabolism?

One of the more common ways to evaluate protein quality in a food that does not involve nitrogen balance studies is:

In general, most amino acids are absorbed from the

A function of hydrochloric acid in gastric juice during protein digestion is

What is the primary mechanism for regulation of amino acids in excess of need for synthesis of protein, providing about 50% of the liver energy needs after a meal?

During protein digestion, peptides are broken into free amino acids mainly

Which amino acids are metabolized mostly in skeletal muscles?

Using, 2 high-energy bonds, arginosuccinate synthetase joins aspartate and citrulline to produce arginosuccinate in the cytosol. This is the rate-limiting step in _____ synthesis.

Three important enzymes remove ammonia from body cells. One is carbamoyl phosphate synthestase I. The other two are:

A particular amino acid is very important for several metabolic pathways in enterocytes and so it is often added to nutritional mixtures used for hospitalized patients. The important amino acid is

A genetic defect diminishing branched-chain alpha-keto acid dehydrogenase complex activity results in

Which regulatory peptides in the pancreatic phase of digestion activate the release of brush-border enzymes such as enteropeptidase?

When the amino group has been removed from an amino acid, the carbon skeleton or α-keto acid may be used in many different ways. Which of the following is NOT a possible fate for the carbon skeleton?

Legumes are limited in sulfur-containing amino acids, methionine and cysteine. What food group is considered complementary because it supplies these amino acids?

Which of the following amino acids represent the branched-chain amino acids found in systemic circulation?

Which of the following is a nitrogen-containing, non-protein compound that performs an important function in the body?

Serotonin is made from which amino acid?

Which level of organization determines the final form of a protein molecule consisting of several polypeptide chains?

Zwitterions are amino acids that have no net electrical charge because