At the breakfast table, your roommate says, "Oops! I forgot to take my melatonin last night. I'd better take it now." How do you respond?
A. "Don't take it after a meal - it promotes the 'fight-or-flight' response, not 'rest-and-digest'."
B. "Good idea - you don't want your bones to get brittle."
C. "Don't take it now - it regulates biological rhythms, and is normally high at night and low during the day."
D. "Be sure not to take too much, or your blood sugar could get dangerously low."
Answer: C
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The population is entering exponential growth at letter ____
a. A b. B c. C d. D
e. EWhich of the following BEST explains the finding that the nuclear DNA of house cats and African wild cats has a very high degree of similarity?
a. Divergent morphological evolution has occurred. b. Convergent morphological evolution has occurred. c. House cats and African wild cats share a recent common ancestor. d. House cats and African wild cats are both members of the family Felidae. e. Convergent molecular evolution has occurred.
The Michaelis constant (Kw) of an enzymatic reaction is _____.
a) a measure of the maximum number of substrate molecules that can be converted to products b) none of the choices is correct c) a measure of the infinity of the enzyme for the substrate under specific reaction conditions d) a measure of the substrate concentration at exactly one half of Vmax
Use the concepts of antigenic drift and antigenic shift to describe why influenza causes both "routine" seasonal outbreaks as well as to periodically cause more serious global outbreaks, or pandemics
What will be an ideal response?