Integrated Web Site to Accompany Discovering Nutrition, Second Edition

Title: Integrated Web Site to Accompany Discovering Nutrition, Second Edition

Practice Quizzes

Nutrition Science Animations

Interactive Summaries

Crossword Puzzles

Interactive Glossary

Health and Nutrition Directory

Nutrition Journals

Share Healthy Recipes

Nutrition Links

Eating Great in College

Chemistry Review

For Instructors

Feedback & Suggestions

Please read each question and select your answer from the choices provided. You must complete all of the questions in order to view your results. At the end of each exam, you have the option to e-mail your results to your instructor.

1: What controls the relative proportion of muscle fiber types?
	A: strength training
	B: age of the athlete
	C: genetics
	D: the type of activity to which his or her body is accustomed.

2: Muscle fibers contain four to six times as much creatine phosphate as ATP.
	A: TRUE
	B: FALSE

3: The oxygen energy system produces little ATP.
	A: TRUE
	B: FALSE

4: Which vitamin is essential for energy metabolism?
	A: vitamin C
	B: vitamin K
	C: vitamin A
	D: the B vitamins

5: What happens to lactate after it diffuses through muscle cell membranes into the bloodstream?
	A: the kidneys excrete it in urea
	B: it begins to accumulate, making cells more acidic.
	C: blood cells use it to make more ATP
	D: the lactate travels to other muscle cells where it re-enters the energy-producing glycolytic pathways.

6: This type of muscle attaches to your skeleton.
	A: skeletal
	B: cardiac
	C: smooth
	D: fiber

7: Perceived exertion is the objective measurement of how difficult an effort is.
	A: TRUE
	B: FALSE

8: How do athletes who take carnitine supplements believe this will help their performance?
	A: carnitine will help move long-chain fatty acids into mitochondria faster, increasing the use of fat as an energy source
	B: carnitine will enhance amino acid uptake which then increases protein synthesis
	C: extra stores of carnitine will prolong short-term energy availability
	D: carnitine will help neutralize the buildup of lactic acid in muscles

9: Which would be the best food to consume within an hour after intense exercise?
	A: white bread
	B: an apple
	C: a hamburger
	D: bran muffin

10: It can take 24 to 48 hours after an event to replenish glycogen stores.
	A: TRUE
	B: FALSE

11: In which activity would your body rely mostly on fast-twitch fibers?
	A: a five mile leisurely bike ride
	B: a 45 minute walk
	C: 400 meter swim
	D: 100 meter dash

12: What determines the rate of muscle glycogen's depletion?
	A: the intensity of the activity
	B: the duration of the activity
	C: genetics
	D: the type of activity

13: The increased breakdown of red blood cells in the foot capillaries of long distance runners contributes to a low status of which nutrient?
	A: vitamin B12
	B: zinc
	C: iron
	D: vitamin C

14: Which would not result from a diet providing excess protein?
	A: a high-fat diet
	B: dehydration
	C: diet will contribute to mineral losses
	D: none of the above

15: Protein combined with carbohydrate in a postexercise meal increases glycogen synthesis more than carbohydrate alone.
	A: TRUE
	B: FALSE

16: Athletes should consume diets with less than 15 percent of energy from fat.
	A: TRUE
	B: FALSE

17: The rate at which a body sweats depends on the following factors except
	A: type of clothing
	B: fitness level
	C: initial fluid balance
	D: age

18: Using sports drinks to replace electrolytes is suggested for activities that last a minimum of ____ hours.
	A: 1
	B: 2
	C: 4
	D: 5

19: Calcium
	A: is essential for normal muscle function
	B: is essential for strong bones
	C: coupled with regular exercise, slows the deterioration of the skeleton with age.
	D: all of the above

Optional: Enter your name and your instructor's E-mail address to have your results E-mailed to him or her.
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