1) How does a double-blind experiment work?
a.Both subject groups take turns getting each treatment.
b.Neither subjects nor researchers know which subjects are in the control or
experimental group
c.Neither group of subjects knows whether they are in the control or experimental
group, but the researchers do know.
d.Both subject groups know whether they are in the control or experimental group, but
the researchers do not know.
e.Neither the subjects nor the persons having contact with the subjects know the true
purpose of the experiment.
2) Which of the following may be used to determine protein utilization?
a. Calorimetry
b. Nitrogen balance
c. Amino acid pool
d. Supplementary value
e. Body mass index
3) Which recommendation is part of the Dietary Guidelines for Americans?
a.Balance kcalories.
b.Limit protein foods intake.
c.Practice good foot hygiene.
d.Reduce seafood consumption.
e.Become vegetarians.
4) What is the percent digestibility of most animal proteins?
a. 50-59
b. 60-69
c. 70-79
d. 80-89
e. 90-99
5) One important function of mucus is to ____.
a. help solubilize bile
b. stabilize pancreatic enzymes
c. enhance absorption of vitamin B12
d. protect the stomach walls from digestion
e. facilitate peristalsis
6) In photosynthesis, the plant uses energy from the sun, plus water and carbon dioxide,
to synthesize ____.
a. carbohydrates only
b. fats and carbohydrates only
c. protein and carbohydrates only
d. fats, proteins, and carbohydrates
e. protein only
7) When the rate of lactate production exceeds the rate of clearance, intense activity can
be maintained for only
a. 10 to 60 seconds.
b. 1 to 3 minutes.
c. 3 to 5 minutes.
d. 5 to 10 minutes.
e. 10 to 15 minutes.
8) A variation in a single nucleotide of a DNA strand is called a(n) ____.
a. RNA switch
b. thymine substitution
c. environmental mutation
d. single nucleotide polymorphism
e. replication failure
9) A deficiency of which of the following vitamins results in accumulation of
homocysteine in the blood?
a.Folate
b.Biotin
c.Niacin
d.Vitamin K
e.Vitamin C
10) Which of the following describes fat utilization during physical activity?
a. Fat that is stored closest to the exercising muscle is oxidized first.
b. Fat represents the major fuel source during sustained, moderate activity.
c. Fat oxidization makes more of a contribution as the intensity of the exercise
increases.
d. Fat is burned in higher quantities during short, high-intensity exercises than
prolonged, low-intensity exercises.
e. Fat makes more and more of a contribution to the fuel mixture as exercise intensity
increases.
11) Which statement describes a drawback of olestra consumption?
a. It yields 9 kcalories per gram.
b. It imparts off-flavors to foods.
c. It raises blood glucose levels.
d. It inhibits absorption of vitamin E.
e. It can cause severe constipation.
12) What percentage of foods imported from other countries are tested?
a. 1
b. 5
c. 10
d. 15
e. 20
13) The iron-storage protein ____________________ captures iron from food and
stores it in the cells of the small intestine.
14) When the body needs iron, it is released to an iron transport protein called
____________________.
15) Blindness due to vitamin A deficiency is called ____________________.
16) ____________________ responds to acidic chyme in the small intestine and
stimulates the pancreas.
17) Deficiencies of ____________________, an oxidized form of a mineral, do not
occur when diets contain protein.
18) ____________________ is the major anion of the extracellular fluids.