Which is the largest division of the geologic time scale?
a. eon
b. era
c. epoch
d. period
e. millennium
a
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Humans and chimps look and behave differently due to differences in ________ rather than in genome sequence.
A) gene expression B) genetic mutation C) phenotypes D) mtDNA
The functions of roots do NOT include
A. photosynthesis B. absorbing nutrients C. absorbing water D. anchoring a plant
A northern blot differs from a Southern blot in the
A) type of probe used. B) presence or absence of a nitrocellulose membrane. C) size of the genetic sequences involved. D) number of genetic sequences detected. E) type of nucleic acid being isolated.
A young man is experiencing fever and severe headaches, and is having difficulty staying awake. He reports having spent time in Africa on a missionary trip several months ago. Recently he spent time in a park where he went swimming in the lake and was
bitten by a bat he attempted to catch. His cerebrospinal fluid is nearly clear, and contains long, slender, mobile cells. This description indicates infection with A) Acanthamoeba. B) an enterovirus. C) rabies virus. D) Neisseria meningitidis. E) Trypanosoma brucei.