Download Name: Ch 6 Take Home Quiz Due: 3/22/13 Multiple

Name:
Ch 6 Take Home Quiz
Due: 3/22/13
Multiple-Choice Questions – Write the letter of answer choice to the left of number.
1) The most abundant protein in the body is
A) hemoglobin. B) collagen. C) keratin. D) actin.
2) It is recommended that you consume from 10 to ________ percent of your calories from
protein.
A) 15 B) 25 C) 35 D) 40
3) What percent of daily calories is currently consumed as protein in the United States?
A) 10 B) 15 C) 20 D) 25
4) How many calories are yielded by 1 gram of protein?
A) 2
B) 4
C) 7
D) 9
5) What percent of plant proteins are typically digestible?
A) 50 — 70 B) 60 — 80 C) 70 — 90 D) 80 — 100
6) Excess protein is stored as
A) glycogen.
B) muscle.
C) fat
D) amino acids
7) A DNA segment that codes for a specific protein is called
A) a peptide. B) a gene. C) a ribosome. D) an RNA.
8) Which of the following statements is NOT true of non-essential amino acids?
A) They are synthesized by the body.
B) They are not necessary for protein synthesis.
C) There are 11 amino acids that belong to this group.
D) They can be broken down to provide energy.
9) A rare genetic disorder, phenylketonuria (PKU), is caused by the body's inability to properly
degrade ________. A) alanine B) phenylalanine C) valine D) lysine
10) Compounds in your body that consist of numerous amino acids and are found in all living
cells are called
A) proteins. B) peptides. C) peptones. D) dipeptides.
11) The most common inherited blood disorder in the United States is
A) sickle-cell anemia.
B) pernicious anemia.
C) iron-deficient anemia.
D) None of these answers is correct.
12) Proteins can be denatured or rendered inactive by which of the following?
A) heat B) acids C) salts D) All of these answers are correct.
13) Digestion of protein within the stomach begins with the enzyme
A) pepsinogen. B) trypsinogen. C) pepsin. D) protease.
Nutrition & the Human Body
Name:
Ch 6 Take Home Quiz
Due: 3/22/13
14) The type of RNA that carries the amino acid to the ribosome is
A) mRNA. B) rRNA. C) tRNA. D) All of these answers are correct.
15) Which of the following is a protein that provides structural support to body tissues?
A) antibody B) hemoglobin C) insulin D) collagen
16) The proteins that act as catalysts and speed up reactions are
A) enzymes. B) antibodies. C) hormones. D) buffers.
17) Proteins that act to maintain the body's proper pH are known as
A) enzymes. B) antibodies. C) hormones. D) buffers.
18) A gene is a segment of ________ that codes for a specific protein.
A) RNA B) protein C) DNA D) ribosome
19) Denaturation of a protein results in
A) the removal of amino acids.
B) alterations in the protein's function.
C) tighter folding of the protein.
D) None of these answers is correct.
20) The absorption of amino acids takes place in the
A) mouth. B) stomach. C) small intestine. D) large intestine.
21) Amino acids are joined together by which kind of bond?
A) hydrogen bond B) glycosidic bond C) glucogenic bond
D) peptide bond
22) Proteins help increase ________, the feeling of fullness, after a meal more than either
carbohydrate or fat
A) thirst B) hunger C) satiety D) None of these answers is correct.
Problem Solving
Jill is 24 years old and weighs 125 pounds. What is Jill's approximate protein requirement per
day? Show conversion set up and circle answer (unit labels too)
Short Answer Questions Describe the basic structure of an amino acid. (3 pts)
Essay Choose four ways in which your body uses proteins and discuss each of the four. (4 pts)
Nutrition & the Human Body