In endurance activities, “hitting the wall” is most likely due to which one of the following?
1.Build-up of lactate within muscles
2.Lack of creatine phosphate
3.Running out of fatty acids
4.Running out of muscle glycogen
4
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Which of the following statements is true?
A. Most enzymes have names that end with -ase. B. Enzymes can function as electrolytes. C. After an enzyme catalyzes a chemical reaction, it can no longer function. D. Enzymes can function under a wide range of environmental conditions, such as pH and temperature.
The liver needs vitamin K to ________.
A. synthesize prothrombin B. process calcium C. metabolize alcohol D. store glycogen
The best weight gain advice for normal-weight women is that:
a. women should gain approximately 0.5 lb/week throughout the pregnancy. b. women should not gain in the first trimester but gain approximately 1 lb/week in the other two trimesters. c. women of different races gain weight at different rates throughout pregnancy. d. approximately 3-5 lbs should be gained in the first trimester and gradual, consistent gains thereafter.
The best vitamin B-6 food sources include
A. enriched breads and cereals. B. deep yellow/orange fruits and vegetables. C. meat, fish, and poultry. D. milk and dairy products.