In the crossed-extension reflex, if the right leg flexes, then the left leg:
A) extends. B) flexes. C) abducts. D) adducts.
Answer: A
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Rebecca is fasting today. She can expect less saliva secretion on a fasting day than on a day when she is snacking every few hours.
Answer the following statement true (T) or false (F)
Hydrogen bonds form between molecules containing _________ bonds; the hydrogen bond is between a hydrogen atom of one molecule and a partially _________ charged atom of another.
A. polar covalent; negatively ?B. polar covalent; positively ?C. nonpolar covalent; positively ?D. nonpolar covalent; negatively ?E. ionic; positively
The discipline that might examine structural interactions within a sheet of muscle tissue is called ________.
Fill in the blank(s) with the appropriate word(s).
Why is cholesterol necessary in the body?
A) It is important for energy production. B) It is an important enzyme. C) It is a building block for proteins. D) It is a component of plasma membranes and is important for cell growth and division. E) It makes up the genetic material.