The preconception period is ________.
A. the time before pregnancy
B. the ability to conceive
C. the point at which the ovum is fertilized by the sperm
D. the time before birth
Answer: A
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Genetic material contained in cells that initiates and directs the production of proteins in the body is called:
1.hormones. 2.enzymes. 3.phagocytes. 4.deoxyribonucleic acid.
A refined grain has the bran and germ removed, while an enriched grain has all the nutrients added back
a. true b. false
Dialysis removes excess fluids and wastes from the blood by employing the principles of diffusion, osmosis, and ultrafiltration
a. True b. False Indicate whether the statement is true or false
Which of the following minerals is a component of the body's oxygen-transporting system?
a. Zinc b. Phosphorus c. Iron d. Magnesium