Match the terms appropriately
a. nitrogen-containing base, sugar, phosphate group(s)
b. copy of an organism
c. chromosome that does not determine sex
d. DNA wrapped around histones
e. fills in gaps, seals breaks in a DNA strand
f. two chromosomes copies of each
g. adds nucleotides to a growing DNA strand________ nucleosome________ clone________ nucleotide________ diploid________ DNA ligase________ DNA polymerase________ autosome
d
b
a
f
e
g
c
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Although no definitive guidelines are available for the treatment of Sphingomonas paucimobilis infections, which antibiotic appears to have potential activity against this organism?
a. Penicillin b. Ttrimethoprim-sulfamethoxazole combi-nation c. Amoxicillin and Flagyl d. Isoniazid and Imipenem
Which region(s) of the ribosome accept(s) charged tRNA molecules during the elongation phase of translation?
a. the A site b. the A site or the E site c. the P site d. the P site or the E site e. the E site
What percentage of the species that have ever existed on earth are probably now extinct?
a. less than 10% b. about 99.9% c. about half d. 25% e. 75%
After the publication of On the Origin of Species, the idea of evolution was generally accepted. What part of Darwin’s
theory of evolution, however, was fiercely debated?
a. natural selection b. environmental change c. gradual change d. the old age of the Earth e. limited resources