Researchers are conducting a study to determine the effects of vitamin D supplements on the adult human immune system. The study involves providing pills that contain vitamin D to one group of human adults and pills that do not contain the vitamin or other active ingredients to another group of adults. The pills that do not contain vitamin D are
A. distractors.
B. antidotes.
C. placebos.
D. interventions.
Answer: C
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Which of the following statements is true with regard to the structure and properties of triglycerides?
a. Triglycerides always contain only saturated fatty acids. b. All triglycerides consist of three fatty acids attached to a glucose molecule. c. The three fatty acids that make up a triglyceride molecule may vary in structure and physical properties. d. The length of a fatty acid chain does not affect the melting point of the fatty acid.
Which of the following is a basic component of physical fitness?
A) muscular strength B) muscular endurance C) cardiorespiratory endurance D) all of the above
Which of the following statements regarding the third stage of alcoholic liver disease is incorrect?
A) Scar tissue is formed. B) Liver cells die. C) It is reversible. D) It is also known as cirrhosis.
The Acceptable Macronutrient Distribution Ranges (AMDRs) recommend that 20 to 30 percent of energy should come from lipids. Given that the caloric requirement per day is approximately 2,000 kcal, how much kilocalories of energy should come from lipids?
A) 750 kcal B) 600 kcal C) 200 kcal D) 350 kcal