What is one virulence factor that differentiates Staphylococcus aureus from other species of staphylococci?
A. It has a capsule.
B. It can produce coagulase.
C. It produces catalase.
D. it can live on the surface of the skin and in cutaneous oil glands.
E. it produces lipase.
Answer: B
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Which of the following did Watson and Crick already know when they were trying to determine the structure of DNA? The number of _____
A) purines is always larger than the number of pyrimidines B) pyrimidines is always larger than purines C) cytosines is always the same as adenines D) guanines is always the same as thymines E) purines is always the same as pyrimidines
What is a negative feedback mechanism. Give an example of a negative feedback mechanism that occurs when body temperature drops
What will be an ideal response?
The main function of the urinary bladder is to__________.
Fill in the blank(s) with correct word
Because it is possible for a female to mate with multiple males, any of whom could be the father, male mammals and birds always:
a. invest more in the care of the offspring. b. be the choosier sex in mating. c. have some degree of paternity uncertainty. d. invest less in the care of the offspring. e. mate with kin that they can trust.