The length of day is ____ apt to change and the sunlight is ____ near the equator
a. less; strongest
b. less; weakest
c. more; strongest
d. more; weakest
e. equally; constant
A
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In order for a cell to receive a signal, it must possess an appropriate ____
a. glycolipid b. glycoprotein c. receptor d. transfer protein e. hormone
Viral genomes:
a. may consist of DNA. b. may consist of RNA c. are linear. d. are circular. e. All of the above.
The process by which microorganisms cause diseases is known as
A) pathogenesis. B) virulence. C) LD50 (lethal dose50). D) infection.
Which of the following levels of ecological interaction are arranged from most inclusive to least inclusive?
a. community, biosphere, ecosystem, population b. ecosystem, community, biosphere, population c. population, community, ecosystem, biosphere d. ecosystem, biosphere, community, population e. biosphere, ecosystem, community, population