Which of the following would likely be the most difficult to kill if you were you to can your own food?
A) streptococci
B) endospores
C) biofilms
D) staphylococci
B
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A wide variety of microorganisms are commercially used to manufacture ________ for human consumption.
A. sugars B. fatty acids C. vitamins D. none of the choices
Which gland is associated with biological
clocks or biorhythms?
a. pineal b. parathyroid c. hypothalamus d. pituitary e. thymus
Approximately how many years ago did humans of the genus Homo first inhabit eastern Africa?
a. 6 million b. 4 million c. 3 million d. 2 million e. 1 million
A small population of a species invades an island where the species is not found. If the population becomes a new species, this is an example of:
a. the dumbbell model of allopatric speciation. b. the peripheral isolate mode of allopatric speciation. c. sympatric speciation. d. parapatric speciation.