The organisms demonstrated in Image C are:
a) Gram positive
b) Gram negative
c) Acid fast
d) Argentaffin
Answer: a) Gram positive
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Although extinction is a natural process, current extinctions are of concern to environmentalists because _____
A) more animals than ever before are going extinct B) most current extinctions are caused by introduced species C) the rate of extinction is higher than background extinction rates D) current extinction is primarily affecting plant diversity
A 37-year-old man traveling through South America has a sudden onset of fever, severe headache, and chills. A macropapular rash develops on his trunk, which then spreads to his face and extremities. The vector transmitting this disease is most likely:
a. ticks. b. mosquitos. c. lice. d. sandflies.
What is an example of the inefficient use rather than the waste of a catch? a. Dolphins as a tuna bycatch
b. Overfishing of large fish. c. Catching sharks for their fins only. d. Drift net bycatch.
Which group of fishes evolved first?
A) Ray-finned fishes B) Lobe-finned fishes C) Cartilaginous fishes D) Jawless fishes