The idea that many species that once lived are now extinct due to major geologic events is called ________ and was developed by ________
a. catastrophism / Georges Cuvier
b. inheritance of acquired traits / Jean-Baptiste Lamark
c. principles of geology / Charles Lyell
d. evolution / Charles Darwin
a
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Which of these is expected to be SMALLEST?
a) Bacteriophage M13, a virus
b) Chilomastix mesnili, a unicellular eukaryote
c) Methanobrevibacter smithii, an archaean prokaryote
d) Bacteroides thetaiotaomicron, a bacterial prokaryote
Is it possible to be a "carrier" for achondroplasia (phenotypically normal but capable of passing the allele to one's offspring)?
a. Yes b. No
Treponema pallidum
A. can cross the placenta. B. has a hooked tip to attach to epithelium. C. is transmitted by direct sexual contact. D. has humans as the sole reservoir. E. All of the choices are correct.
Which of the following patterns of information flow is unique to retroviruses within a cell?
A) RNA ? protein B) protein ? DNA C) RNA ? DNA D) DNA ? RNA E) protein ? RNA