Question 1

How are proteins digested and absorbed?

Accepted Answer

Proteins are crushed and moistened in th...

Question 2

If a nonessential amino acid is not available,cells can make it from a keto acid if ________ source is available.

Accepted Answer

A)   a carbonyl 
B)   a nitrogen 
C)   an ammonia 
D)   a carbon 
E)   an oxygenF) B) and D)
G) B) and C)

Question 3

Which of the following statements about whey protein is FALSE?

Accepted Answer

A)   It is popular among athletes hoping to build muscle. 
B)   It is found in many affordable protein powders. 
C)   It is a waste product of cheese production. 
D)   It benefits body tissues in ways dietary proteins cannot. 
E)   It has a high leucine content and is digested quickly.F) D) and E)
G) B) and D)

Question 4

Which of the following is a nonessential amino acid?

Accepted Answer

A)   Serine 
B)   Histidine 
C)   Valine 
D)   Tryptophan 
E)   PhenylalanineF) All of the above
G) A) and E)

Question 5

What is the most likely reason for a person to have abnormally high blood urea levels?

Accepted Answer

A)   Liver dysfunction 
B)   Kidney dysfunction 
C)   Rapid weight gain 
D)   Protein intake one-tenth the RDA 
E)   Hyperstimulation of the immune systemF) A) and C)
G) A) and E)

Question 6

Describe the relationship between protein turnover and nitrogen balance.How does nitrogen balance differ among infants,adults,and those who are injured or on weight-loss diets?

Accepted Answer

Protein turnover and nitrogen balance go...

Question 7

Digestive enzymes are ________ and function optimally at their specific pH.

Accepted Answer

A)   lipids 
B)   carbohydrates 
C)   sterols 
D)   proteins 
E)   supplementsF) A) and C)
G) D) and E)

Question 8

Discuss three of the many roles of proteins in the body.

Accepted Answer

From the moment of conception,proteins f...

Question 9

The digestibility of most animal proteins is ________.

Accepted Answer

A)   50 to 59% 
B)   60 to 69% 
C)   70 to 79% 
D)   80 to 89% 
E)   90 to 99%F) B) and C)
G) A) and D)

Question 10

Which protein has a quaternary polypeptide structure and carries 80% of the body's iron?

Accepted Answer

A)   Serine 
B)   Valine 
C)   Hemoglobin 
D)   Insulin 
E)   TryptophanF) C) and E)
G) A) and B)

Question 11

About how many protein-coding genes are in the human genome?

Accepted Answer

A)   5,000 
B)   10,000 
C)   20,000 
D)   40,000 
E)   80,000F) B) and D)
G) B) and C)

Question 12

The tangled shape of a polypeptide is its ________ structure,which gives it maximum stability.

Accepted Answer

A)   primary 
B)   secondary 
C)   tertiary 
D)   quaternary 
E)   denaturalizedF) B) and D)
G) A) and E)

Question 13

The protein RDA for adults is ________ grams per kilogram.

Accepted Answer

A)   0.08 
B)   0.36 
C)   0.8 
D)   3.6 
E)   eightF) A) and E)
G) B) and E)

Question 14

MATCHING
-A dietary nonessential amino acid

Accepted Answer

A)  Soy
B)  Urea
C)  Pepsin
D)  Tryptophan
E)  GelatinF) SerineG) SulfurH) KetoI) DipeptideJ) TranslationK) DenaturationL) TranscriptionM) Sickle-cell anemiaN) MarasmusO) SerotoninP) Gene expressionQ) HemoglobinR) Conditionally essential amino acidS) ArginineT) Protein turnoverU) E) and M)
V) J) and L)

Question 15

MATCHING
-High-quality plant protein

Accepted Answer

A)  Soy
B)  Urea
C)  Pepsin
D)  Tryptophan
E)  GelatinF) SerineG) SulfurH) KetoI) DipeptideJ) TranslationK) DenaturationL) TranscriptionM) Sickle-cell anemiaN) MarasmusO) SerotoninP) Gene expressionQ) HemoglobinR) Conditionally essential amino acidS) ArginineT) Protein turnoverU) G) and J)
V) G) and Q)

Question 16

A ________ provides a standard against which to measure the quality of other proteins.

Accepted Answer

The answer of A ________ provides a standard against which...

Question 17

MATCHING
-A condition of protein malnutrition

Accepted Answer

A)  Soy
B)  Urea
C)  Pepsin
D)  Tryptophan
E)  GelatinF) SerineG) SulfurH) KetoI) DipeptideJ) TranslationK) DenaturationL) TranscriptionM) Sickle-cell anemiaN) MarasmusO) SerotoninP) Gene expressionQ) HemoglobinR) Conditionally essential amino acidS) ArginineT) Protein turnoverU) D) and J)
V) D) and Q)

Question 18

A reference protein is determined by comparing its amino acid composition with the essential amino acid requirements of ________.

Accepted Answer

A)   infants 
B)   preschool-age children 
C)   male teenagers 
D)   pregnant women 
E)   adult menF) B) and E)
G) B) and D)

Question 19

MATCHING
-Disease caused by sequencing errors

Accepted Answer

A)  Soy
B)  Urea
C)  Pepsin
D)  Tryptophan
E)  GelatinF) SerineG) SulfurH) KetoI) DipeptideJ) TranslationK) DenaturationL) TranscriptionM) Sickle-cell anemiaN) MarasmusO) SerotoninP) Gene expressionQ) HemoglobinR) Conditionally essential amino acidS) ArginineT) Protein turnoverU) D) and J)
V) L) and P)

Question 20

Which of the following would not be classified as a carcinogen by the World Health Organization?

Accepted Answer

A)   Bacon 
B)   Hot dogs 
C)   Beef jerky 
D)   Chicken tenders 
E)   HamF) A) and E)
G) A) and C)

Exam 6: Protein: Amino Acids

MATCHING -A dietary nonessential amino acid

Correct AnswerverifiedShow Answer

Which of the following is a nonessential amino acid?

Correct AnswerverifiedShow Answer

Digestive enzymes are ________ and function optimally at their specific pH.

Correct AnswerverifiedShow Answer

The tangled shape of a polypeptide is its ________ structure,which gives it maximum stability.

Correct AnswerverifiedShow Answer

Describe the relationship between protein turnover and nitrogen balance.How does nitrogen balance differ among infants,adults,and those who are injured or on weight-loss diets?

Correct AnswerverifiedProtein turnover and nitrogen balance go...View AnswerShow Answer

Which protein has a quaternary polypeptide structure and carries 80% of the body's iron?

Correct AnswerverifiedShow Answer

The digestibility of most animal proteins is ________.

Correct AnswerverifiedShow Answer

Discuss three of the many roles of proteins in the body.

Correct AnswerverifiedFrom the moment of conception,proteins f...View AnswerShow Answer

About how many protein-coding genes are in the human genome?

Correct AnswerverifiedShow Answer

MATCHING -High-quality plant protein

Correct AnswerverifiedShow Answer

What is the most likely reason for a person to have abnormally high blood urea levels?

Correct AnswerverifiedShow Answer

A reference protein is determined by comparing its amino acid composition with the essential amino acid requirements of ________.

Correct AnswerverifiedShow Answer

If a nonessential amino acid is not available,cells can make it from a keto acid if ________ source is available.

Correct AnswerverifiedShow Answer

MATCHING -A condition of protein malnutrition

Correct AnswerverifiedShow Answer

How are proteins digested and absorbed?

Correct AnswerverifiedProteins are crushed and moistened in th...View AnswerShow Answer

Which of the following statements about whey protein is FALSE?

Correct AnswerverifiedShow Answer

The protein RDA for adults is ________ grams per kilogram.

Correct AnswerverifiedShow Answer

Which of the following would not be classified as a carcinogen by the World Health Organization?

Correct AnswerverifiedShow Answer

MATCHING -Disease caused by sequencing errors

Correct AnswerverifiedShow Answer

A ________ provides a standard against which to measure the quality of other proteins.

Correct AnswerverifiedShow Answer

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Protein turnover and nitrogen balance go...
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From the moment of conception,proteins f...
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Proteins are crushed and moistened in th...
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