Because of its association with tools, the earliest human was called ________ meaning "handy man."
A. Cro-Magnon
B. Homo sapiens
C. Neanderthal
D. Homo habilis
E. Homo erectus
Answer: D
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A particular cell contains all of the standard histones but lacks several histone variants. Which of the following MAY be true of this cell?
A. The cell will be completely unable to remodel its chromatin. B. The cell will have an enhanced ability to chemically modify its histones. C. The cell will be unable to express any of its genes at all. D. The cell will express different sets of genes than other cells in the same organism E. The cell will not be able to divide.
Seasonal abscission of fruits and leaves is mediated by ____
a. abscisic acid b. ethylene c. gibberellin d. auxin e. cytokinin
The science that deals with when diseases occur and how they are transmitted is called
A) ecology. B) epidemiology. C) communicable disease. D) morbidity and mortality. E) public health.
Antimicrobials that block protein synthesis by binding to the mRNA are
A. aminoglycosides. B. antisense nucleic acids. C. macrolides. D. beta-lactams. E. nucleic acid analogs.