Which event is geologically the oldest?
a. evolution of vascular plants
b. evolution of modern humans
c. oxygen accumulation in the Earth's
atmosphere
d. evolution of prokaryotes
e. evolution of reptiles
D
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A molecule comprised of a five-carbon sugar, a nitrogen-containing base, and a phosphate group is called:
a. a nucleic acid. b. a triglyceride. c. deoxyribonucleic acid. d. a polypeptide. e. a carbohydrate.
Pathogenic microbes that cause disease in healthy people are called ________.
A. opportunistic pathogens B. indigenous biota C. normal biota D. micropathogens E. true pathogens
Mycorrhizae
a. benefit plant growth. b. are an example of mutualism. c. receives sugars from its plant partner. d. increase the surface area for absorption. e. are described by all of these
A lichen consists of a(n) ________ and an alga (or, in some cases, a cyanobacterium)
Fill in the blank(s) with correct word