A/an _______ is defined as a collection of populations sharing a given habitat.
a) Biosphere
b) Community
c) Biome
d) Ecosystem
Answer: b) Community
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Which of the following is not typically a modification of histones?
A. adenylation B. phosphorylation C. methylation D. acetylation E. adenylation and phosphorylation
You see a killifish jumping around on the surface before it is consumed by a bird. You conclude the fish was
A) trying to scare off the predator. B) hunting for flying insects. C) infected with a trematode. D) starving to death.
In most developed countries, overall population growth rates ________
A) are high, so the population size is growing rapidly B) are high, so the population size is fairly stable C) are near zero, so the population size is fairly stable D) are low, so the population size is declining
Which type of infecting organism causes strep throat?
A. protist B. parasitic worm C. virus D. bacterium E. fungus