Genetic basis of bacterial antimicrobial drugs resistance includes mutation, acquisition of plasmids or transposons
a. true
b. false
Answer: a. true
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Swarming in polychaetes for reproduction appears to be timed by:
a. biorhythms of the animals. b. lunar cycle and tides. c. solar cycle and tides. d. temperature. e. current direction.
Determining the effects of natural selection on human behavior is much more robust if ________
A) one disentangles the effects of culture from evolutionary history in detailed, controlled studies of a single culture B) groups of humans are separated into control and treatment groups for extensive experimentation C) data is collected cross-culturally to eliminate the effects of culture on behavior D) We cannot study human behavior in an evolutionary context.
The function of cotyledons in many plants is to:
a. enclose and protect the seed. b. act as a short embryonic root. c. produce pollen. d. store food reserves. e. aid in seed dispersal.
Which of the following is the best method to sterilize heat-labile solutions?
A) dry heat B) autoclave C) membrane filtration D) pasteurization E) freezing