Margaret is 87 years of age. Compared to when she was 27 years of age, her ________ now.
A. bones are more dense
B. stomach secretes less intrinsic factor
C. body requires less vitamin B-12
D. cells require more energy
Answer: B
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In order to achieve energy balance, your dietary intake of calories must
A. equal your calories expended. B. contain foods that burn more calories than they provide. C. be less than the calories your body needs. D. be more than the calories your body needs
The endurance of a muscle is most accurately reflected in the ____
a. size of the muscle b. muscle's ability to work against resistance c. muscle's response time to a stimulus d. muscle's contractibility and elasticity e. muscle's performance for long periods
Gastric juices denature proteins and cause a change in the ____
A) function B) nitrogen content C) structure D) amino acid sequence
The athlete who is most likely to manifest a clinical vitamin B12 deficiency is ____
A) one who is vegetarian B) one who is lactose intolerant C) one with no or low exposure to UV light D) one with hypervitaminosis A