Which two of the following bacteria that are strictly anaerobic with respiratory or fermentative metabolism are most similar in physiological function?
A. Desulfuromonaceae
B. Geobacteraceae
C. Enterobacteriaceae
D. Bdellovibrionaceae
Ans:
A. Desulfuromonaceae
B. Geobacteraceae
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The first DNA comparison studies between humans and chimpanzees relied on which of the following?
A. The more complementary two strands of DNA are, the higher the melting point. B. The more complementary two strands of DNA are, the lower the melting point. C. DNA from different organisms won't combine to form a double helix. D. Proteins from chimpanzees would have a higher melting point than similar proteins from humans. E. Proteins from chimpanzee would have a lower melting point than similar proteins from humans.
The duck-billed platypus shares which of the following traits with non-mammalian animals?
a. teeth. b. lack of cloaca. c. laying eggs. d. hair. e. females produce mile.
In what stage of meiosis does synapsis occur?
A. metaphase II B. anaphase I C. prophase I D. prophase II E. metaphase I
The final product of DNA replication is:
a. mRNA, tRNA, and rRNA molecules. b. a wide variety of proteins. c. DNA fragments. d. two DNA molecules, each of which contains one new and one old DNA strand. e. the enzymes needed for further processes, such as DNA polymerase.