Nutrition Ch.6 Protein

red meat

A high intake of which source of protein is associated with an increased risk for cancer, diabetes, and heart disease?

B

All of the following are consistent with kwashiorkor EXCEPT: A. intake of mostly carbohydrates. B. severe calorie deficiency. C. fatty liver. D. edema.

A. the majority of amino acids used for protein synthesis are supplied by the diet.

All of the following are true of protein metabolism EXCEPT: A. the majority of amino acids used for protein synthesis are supplied by the diet. B. proteins in tissues throughout the body are constantly being broken down. C. often the first step in the metabolism of amino acids is to remove the nitrogen. D. protein turnover describes the process of breaking down and resynthesizing body proteins.

B

An increase in ammonia along with low levels of urea in blood would MOST likely indicate: A.kidney failure. B.liver disease. C.muscle wasting. D.increased protein breakdown.

fluid

Edema is swelling caused by excess _____ trapped in body tissues.

A

How does the denaturation of protein by stomach acid (hydrochloric acid) promote protein digestion? A. allows enzyme access to the peptide bonds B. increases the pH in the stomach C. destroys the function of the gastric juices D. maintains the shape of the protein

protein transporters

Most substances move in and out of cells with the aid of:

D. digested by enzymes produced by small intestinal mucosal cells.

Short peptide fragments (about 4 to 8 amino acids in length) are typically: A. absorbed without further digestion. B. digested by enzymes produced in the stomach. C. digested by enzymes produced by the pancreas. D. digested by enzymes produced by small intestinal mucosal cells.

positive nitrogen balance

Since Susan is pregnant, she is in:

B

The majority of amino acids supplied in the diet are absorbed as: A. tripeptides. B. dipeptides and tripeptides. C. small peptide fragments with no more than eight amino acids. D. individual amino acids.

liver

Urea is synthesized in the:

D

What distinguishes one protein from another? A. Plant proteins have amino acids with the same side chain. B. Short-chain proteins are synthesized by linking amino acids with peptide bonds. C. Animal proteins have amino acids that contain an amino group. D. Each protein has a unique sequence and type of amino acids.

C

What distinguishes protein from other macronutrients? A. Protein offers more calories per gram than other macronutrients. B.Protein contains carbon. C.Protein contains nitrogen. D.Protein is an essential nutrient.

C

What happens when a person's protein intake is inadequate? A. Amino acids are converted to fatty acids. B. The amino group of the amino acids is used to synthesize protein compounds. C. Compounds that are critical for survival will not be synthesized. D. The carbon skeleton of the amino acids is used to synthesize glucose.

Fluid retention occurs in the extremities

What happens when the albumin in the blood gets too low?

D. 48 grams The RDA for protein for a healthy nonathlete who weighs 132 lb is 48 grams.

What is the RDA for protein for Renee, a healthy nonathlete who weighs 132 lb? A. 66 grams B. 58 grams C. 60 grams D. 48 grams

B

What is the fate of excess protein with adequate caloric intake? A. Excess protein is used to make glucose. B. Excess protein is stored as fat in the body. C. Excess protein is converted into muscle. D. Excess protein is excreted in the urine.

C

Which of these values is closest to the protein RDA for an adult athlete who weighs 132 lb? A. 56 grams B. 72 grams C. 48 grams D. 44 grams

B

_____ provide(s) the information for the assembly of amino acids into a particular protein. A.Ribosomes B.Deoxyribonucleic acid (DNA) C.Messenger ribonucleic acid (mRNA) D.Transfer RNA (tRNA)

protein turnover

_____ refers to the continuous breakdown and resynthesis of proteins in the body.