One group of animal viruses that are able to agglutinate red blood cells are the
A. coronavirus.
B. retrovirus.
C. reovirus.
D.
orthomyxovirus.
D
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What was Darwin's main purpose during his time aboard the HMS Beagle?
A. to develop evidence that could be used to support the theory of evolution B. to serve as the ship's naturalist C. to document evidence that would support the concept of natural selection D. Darwin was a sailor with no specific purpose aboard the HMS Beagle.
Nitrogen can be returned to the atmosphere when certain bacteria convert it from nitrate into nitrogen gas, which is a process called ________
Fill in the blank(s) with correct word
Water "beads up" on synthetic fabric such as polyester but binds to cotton. What is the most likely explanation for this?
A) Polyester is not a naturally occurring substance, whereas cotton is a naturally occurring substance. B) Polyester is more flexible than cotton. C) Polyester fibers are thinner than cotton fibers. D) Polyester is nonpolar, whereas cotton is polar.
The resolution of a microscope can be improved by changing the
A) condenser. B) fine adjustment. C) wavelength of light. D) diaphragm. E) coarse adjustment.