Question 1

High protein diets may be harmful for

Accepted Answer

A)   those with kidney disease.
B)   athletes.
C)   the elderly.
D)   body builders.E) A) and B)
F) All of the above

Question 2

All of the following are true of the alteration of the three-dimensional structure of a protein except

Accepted Answer

A)   it tends to be rigid and retains its structure.
B)   it can be caused by heat, acid, or base.
C)   it is called denaturation.
D)   it usually destroys its physiological function.E) A) and B)
F) None of the above

Question 3

Proteins regulate the acid-base balance of the blood by

Accepted Answer

A)   acting as buffers.
B)   releasing nitrogen.
C)   synthesizing hydrochloric acid.
D)   binding sodium ions.E) B) and D)
F) B) and C)

Question 4

Which of the following is not true about an incomplete protein source?

Accepted Answer

A)   It lacks one or more essential amino acids.
B)   It cannot support body growth and maintenance by itself.
C)   To adequately meet protein needs from incomplete protein sources, a person would have to eat two complementary proteins.
D)   Lower quantities of this source could be eaten to get adequate quantities of essential amino acids.E) A) and B)
F) A) and C)

Question 5

Many legumes are deficient in the essential amino-acid ________________ , while grains are limited in _________________.
Rev: 01_20_2015_QC_CS-3591

Accepted Answer

A)   methionine; lysine
B)   alanine; tyrosine
C)   lysine; alanine
D)   arginine; phenylalanineE) A) and D)
F) All of the above

Question 6

Kwashiorkor appears in children between the ages of 2 and 5 years. The reason is that

Accepted Answer

A)   growth needs are low.
B)   children have been weaned from breast milk to starchy gruels.
C)   by this time, adequate exposure to other children allows them to catch it.
D)   protein intake has been high for a long enough time to cause kidney damage.E) B) and D)
F) A) and D)

Question 7

The nitrogen from amino acid breakdown is

Accepted Answer

A)   stored in the liver.
B)   oxidized to carbohydrate.
C)   converted to urea.
D)   converted to fat.E) B) and C)
F) None of the above

Question 8

All of the following are true of high-quality protein except

Accepted Answer

A)   it contains all essential amino acids.
B)   it provides 7 kcal/g of energy.
C)   it can support body maintenance.
D)   it can support body growth.E) B) and C)
F) B) and D)

Question 9

The basic building block of a protein is called a(n)

Accepted Answer

A)   fatty acid.
B)   monosaccharide.
C)   amino acid.
D)   keto acid.E) A) and B)
F) B) and C)

Question 10

Most proteins are ________________________ (joining of 10 or more amino acids) , ranging from about 50 to 2000 amino acids.

Accepted Answer

A)   dipeptides
B)   tripeptides
C)   proteases
D)   polypeptidesE) A) and B)
F) C) and D)

Question 11

A vegetarian who excludes animal flesh but consumes such products as milk and eggs is referred to as a(n)

Accepted Answer

A)   lactovegetarian.
B)   lactoovovegetarian.
C)   vegan.
D)   ovovegetarian.E) A) and B)
F) None of the above

Question 12

Amino acids are transported via the _______________ vein to the liver.

Accepted Answer

A)   hepatic
B)   renal
C)   intestinal
D)   portalE) A) and B)
F) A) and C)

Question 13

The best estimate for the amount of protein required for nearly all adults is _______________ g/kg/day.

Accepted Answer

A)   0.5
B)   0.8
C)   1.6
D)   2.0E) A) and D)
F) None of the above

Question 14

Insulin is one example of a protein that acts as ________________.

Accepted Answer

A)   an antioxidant
B)   an enzyme
C)   a hormone
D)   an antibodyE) A) and B)
F) B) and D)

Question 15

The edema in children with kwashiorkor is the result of fluid leaking into

Accepted Answer

A)   body tissues from the bloodstream because of decreased blood protein levels.
B)   body tissues from the bloodstream because of decreased energy levels.
C)   the bloodstream from body tissues because of decreased cellular proteins.
D)   the bloodstream from body tissues because of decreased energy.E) All of the above
F) B) and C)

Question 16

Proteins that bind to foreign proteins in the body are

Accepted Answer

A)   enzymes.
B)   antibodies.
C)   hormones.
D)   collagen.E) C) and D)
F) B) and C)

Question 17

Which of the following is not true about body proteins?

Accepted Answer

A)   They are in a state of breakdown, rebuilding, and repair.
B)   They are static and change little after achievement of adult status.
C)   Those in the bone marrow and intestine undergo the most change, in terms of breakdown and synthesis.
D)   Their breakdown products, especially amino acids, can be recycled.E) C) and D)
F) All of the above

Question 18

Which of the following is not true about pepsin?

Accepted Answer

A)   Amino acid chains are the digestive products of its action.
B)   Pepsin works best in an alkaline environment.
C)   Acid activates pepsin.
D)   Pepsin acts on food in the stomach.E) All of the above
F) C) and D)

Question 19

The RDA for protein translates into approximately what percentage of total daily kilocalorie needs?

Accepted Answer

A)   5%
B)   10%
C)   15%
D)   20%E) A) and B)
F) None of the above

Question 20

Maggie has anorexia nervosa and regularly starves herself. She is likely to be in a state of

Accepted Answer

A)   protein equilibrium.
B)   positive protein balance.
C)   negative protein balance.
D)   positive energy balance.E) A) and B)
F) A) and C)

Exam 6: Proteins

Maggie has anorexia nervosa and regularly starves herself. She is likely to be in a state of

Correct AnswerverifiedShow Answer

The nitrogen from amino acid breakdown is

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The edema in children with kwashiorkor is the result of fluid leaking into

Correct AnswerverifiedShow Answer

Kwashiorkor appears in children between the ages of 2 and 5 years. The reason is that

Correct AnswerverifiedShow Answer

Many legumes are deficient in the essential amino-acid ________________ , while grains are limited in _________________. Rev: 01_20_2015_QC_CS-3591

Correct AnswerverifiedShow Answer

All of the following are true of high-quality protein except

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Which of the following is not true about pepsin?

Correct AnswerverifiedShow Answer

High protein diets may be harmful for

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The best estimate for the amount of protein required for nearly all adults is _______________ g/kg/day.

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Insulin is one example of a protein that acts as ________________.

Correct AnswerverifiedShow Answer

A vegetarian who excludes animal flesh but consumes such products as milk and eggs is referred to as a(n)

Correct AnswerverifiedShow Answer

Proteins regulate the acid-base balance of the blood by

Correct AnswerverifiedShow Answer

Which of the following is not true about body proteins?

Correct AnswerverifiedShow Answer

The basic building block of a protein is called a(n)

Correct AnswerverifiedShow Answer

Most proteins are ________________________ (joining of 10 or more amino acids) , ranging from about 50 to 2000 amino acids.

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Amino acids are transported via the _______________ vein to the liver.

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The RDA for protein translates into approximately what percentage of total daily kilocalorie needs?

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Which of the following is not true about an incomplete protein source?

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All of the following are true of the alteration of the three-dimensional structure of a protein except

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Proteins that bind to foreign proteins in the body are

Correct AnswerverifiedShow Answer

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Many legumes are deficient in the essential amino-acid , while grains are limited in _. Rev: 01_20_2015_QC_CS-3591

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