The host range of a virus is
A.the geographical location in which the virus is found.
B.limited by availability of its needed nutritional resources.
C.always limited to one species.
D. the type of organisms or cells that a virus can infect.
E. the boundaries of the ecosystem in which it is found.
D. the type of organisms or cells that a virus can infect.
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What piece of the ATP synthase contains the channel for H+ to flow through?
a. the basal unit b. the headpiece c. the stalk d. the lollipop e. the three catalytic sites
Which of the following tend to experience a Type III survivorship curve?
a. Trees b. Birds c. Humans d. Rodents
The half life of Carbon 14 is approximately
____ years.
a. 16,000,000 b. 60,000 c. 8,200 d. 5,400 e. 500
You are studying a mini-ecosystem that you created from samples of lake water, plants, and sediment. Your teacher tells you to drop about 10 sesame seeds on the top of the water because they will attract some interesting organisms. One week later, you
see that the seeds are surrounded by white fuzz that is extending off of the seeds, and you conclude that the decomposing seeds have been colonized by A) diatoms. B) brown algae. C) unikonts. D) water molds.