ch 7

A high-protein diet is discouraged for patients with

kidney disease.

The body needs 18 different amino acids to function properly.

False

High-protein diets are often associated with increased intake of saturated fat and cholesterol in the diet.

True

Peanuts, cow's milk, and shellfish are among foods considered to be highly allergenic.

True

Protein digestion begins in the stomach, where proteins are broken down into shorter polypeptide chains of amino acids.

True

Which of the following enzymes aids in digesting polypeptides into shorter peptides and amino acids?

Trypsin

When over 10 amino acids are chemically linked by peptide bonds, the resulting product is known as

a polypeptide.

Proteins help regulate blood pH by

accepting and releasing hydrogen ions.

The lack of an immune response to foreign compounds entering the body is

anergy.

Excess protein intake can result in

loss of calcium.

A growing child who is consuming adequate protein but only 50% of his or her energy needs, will likely be in

negative nitrogen balance.

A diet that is deficient in carbohydrate will ultimately force the liver and, to a lesser extent, the kidneys to

produce glucose from amino acids.

A vegan diet may be low in

,vitamin B-12, iron and calcium

DNA-coded instructions for protein synthesis consist of a sequence of ___ nucleotides per unit.

3

When food proteins reach the stomach, HCl ________ the protein.

Denatures

Which of the following foods provides all of the essential amino acids?

Milk

The presence of ___________ chemically distinguishes protein from carbohydrate and fat.

Nitrogen

The nucleotide units that represent a specific amino acid in protein synthesis are called

codons

The major symptoms of kwashiorkor in children are

edema and growth failure.

Signs of protein deficiency may include

edema, mild to moderate weight loss poor resistance to infection.