Question 1

Compare and contrast incomplete and complete proteins.

Accepted Answer

A protein that does not contain all of the essential amino acids in sufficient quantities to support growth and health is called an incomplete (or low-quality) protein. Proteins that have all nine of the essential amino acids are considered complete (or high-quality) proteins. The most complete protein sources are from animal sources and include egg whites, ground beef, chicken, tuna and other fish, and milk. Soybeans are the only complete source of plant protein. In general, the Canadian diet is very high in complete proteins, as we eat proteins from a variety of food sources.

Question 2

A substance (usually a protein) that the body recognizes as a foreign invader, triggering an immune response is an

Accepted Answer

A)  antibody. 
B)  antigen. 
C)  antihistamine. 
D)  antibiotic. 
A)  antibody. 
B)  antigen. 
C)  antihistamine. 
D)  antibiotic. B

Question 3

Of the 20 amino acids relevant to the human body, how many are considered nonessential?

Accepted Answer

A)  none 
B)  9 
C)  11 
D)  20 
A)  none 
B)  9 
C)  11 
D)  20 C

Question 4

Denaturation results in the loss of the protein's function.

Accepted Answer

A) True 
 B)False

Question 5

The process of combining two incomplete proteins to make a complete protein is called

Accepted Answer

A)  the protein-combining method. 
B)  amino acid sequencing method. 
C)  mutual supplementation. 
D)  protein. 
A)  the protein-combining method. 
B)  amino acid sequencing method. 
C)  mutual supplementation. 
D)  protein.

Question 6

How many strings of amino acids does a polypeptide consist of?

Accepted Answer

A)  two 
B)  more than four 
C)  nine 
D)  more than ten 
A)  two 
B)  more than four 
C)  nine 
D)  more than ten

Question 7

Conduction of nerve signals and contraction of muscles depends on the proper balance of

Accepted Answer

A)  glucose. 
B)  electrolytes. 
C)  buffers. 
D)  nitrogen. 
A)  glucose. 
B)  electrolytes. 
C)  buffers. 
D)  nitrogen.

Question 8

Which of the following processes involves both the synthesis of new proteins and the breakdown of existing proteins to provide amino acids for building new proteins?

Accepted Answer

A)  transcription 
B)  translation 
C)  turnover 
D)  acidosis 
A)  transcription 
B)  translation 
C)  turnover 
D)  acidosis

Question 9

All legumes are complete proteins.

Accepted Answer

A) True 
 B)False

Question 10

Describe how proteins differ from carbohydrates and lipids.

Accepted Answer

The structure of each protein molecule i

Question 11

The majority of athletes can obtain an adequate amount of protein from eating a healthy diet.

Accepted Answer

A) True 
 B)False

Question 12

Hydrochloric acid converts the inactive pepsinogen into its active form pepsin.

Accepted Answer

A) True 
 B)False

Question 13

Diets high in protein are associated with low blood cholesterol levels.

Accepted Answer

A) True 
 B)False

Question 14

In phenylketonuria (PKU), which amino acid becomes conditionally essential?

Accepted Answer

A)  phenylalanine 
B)  tyrosine 
C)  alanine 
D)  cysteine 
A)  phenylalanine 
B)  tyrosine 
C)  alanine 
D)  cysteine

Question 15

Carlos is a healthy 19-year-old college student who is sedentary. He is 1.8 m (5'11") tall and weighs 79.5 kg (175 pounds). How many grams of protein would you recommend he consume each day?

Accepted Answer

A)  55 grams 
B)  64 grams 
C)  75 grams 
D)  84 grams 
A)  55 grams 
B)  64 grams 
C)  75 grams 
D)  84 grams

Question 16

Which of the following individuals is MOST likely to be in positive nitrogen balance?

Accepted Answer

A)  a 29-year-old woman who is 6 months pregnant 
B)  a 20-year-old female who is consuming 500 calories a day 
C)  a 10-year-old boy recovering from severe burns 
D)  a 30-year-old man with a temperature of 103.7°F 
A)  a 29-year-old woman who is 6 months pregnant 
B)  a 20-year-old female who is consuming 500 calories a day 
C)  a 10-year-old boy recovering from severe burns 
D)  a 30-year-old man with a temperature of 103.7°F

Question 17

Bodybuilders and weight lifters need as much as 2 times more protein than the RDA.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following is a body protein that is stored in a gland and secreted to an organ to restore normal body conditions or balance?

Accepted Answer

A)  enzyme 
B)  hormone 
C)  antibody 
D)  buffer 
A)  enzyme 
B)  hormone 
C)  antibody 
D)  buffer

Question 19

How do our bodies break down dietary protein?

Accepted Answer

The body does not directly use proteins

Question 20

Describe the effect of a limiting amino acid on protein synthesis, using hemoglobin as an example.

Accepted Answer

For protein synthesis to occur, all esse

Exam 6: Proteins: Crucial Components of All Body Tissues

Compare and contrast incomplete and complete proteins.

A substance (usually a protein) that the body recognizes as a foreign invader, triggering an immune response is an

Of the 20 amino acids relevant to the human body, how many are considered nonessential?

Denaturation results in the loss of the protein's function.

The process of combining two incomplete proteins to make a complete protein is called

How many strings of amino acids does a polypeptide consist of?

Conduction of nerve signals and contraction of muscles depends on the proper balance of

Which of the following processes involves both the synthesis of new proteins and the breakdown of existing proteins to provide amino acids for building new proteins?

All legumes are complete proteins.

Describe how proteins differ from carbohydrates and lipids.

The majority of athletes can obtain an adequate amount of protein from eating a healthy diet.

Hydrochloric acid converts the inactive pepsinogen into its active form pepsin.

Diets high in protein are associated with low blood cholesterol levels.

In phenylketonuria (PKU), which amino acid becomes conditionally essential?

Carlos is a healthy 19-year-old college student who is sedentary. He is 1.8 m (5'11") tall and weighs 79.5 kg (175 pounds). How many grams of protein would you recommend he consume each day?

Which of the following individuals is MOST likely to be in positive nitrogen balance?

Bodybuilders and weight lifters need as much as 2 times more protein than the RDA.

Which of the following is a body protein that is stored in a gland and secreted to an organ to restore normal body conditions or balance?

How do our bodies break down dietary protein?

Describe the effect of a limiting amino acid on protein synthesis, using hemoglobin as an example.

The Role of Nutrition in Our Health

Designing a Healthful Diet

The Human Body: Are We Really What We Eat

Carbohydrates: Plant-Derived Energy Nutrients

Fats: Essential Energy-Supplying Nutrients

Nutrients Involved in Fluid and Electrolyte Balance

Nutrients Involved in Antioxidant Function

Nutrients Involved in Bone Health

Nutrients Involved in Energy Metabolism and Blood Health

Achieving and Maintaining a Healthful Body Weight

Nutrition and Physical Activity: Keys to Good Health

Food Safety and Technology: Impact on Consumers

Nutrition Through the Life Cycle: Pregnancy and the First Year of Life

Nutrition Through the Life Cycle: Childhood to Late Adulthood

alcohol

cancer

cardiovascular Disease

diabetes

dietary Supplements: Necessity or Waste

disordered Eating

disorders Related to Specific Foods

the Fetal Environment: a Lasting Impression

fluid Imbalance

global Nutrition

obesity

osteoporosis

phytochemicals

searching for the Fountain of Youth

vitamins and Minerals: Micronutrients With Macro Powers

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