____ is a sugar.
A. Sucrase
B. Pentose
C. C27H46O
D. COOH-CH2-NH3
B. Pentose
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Which pair correctly associates a biochemical process with the appropriate mineral associated with its use in animals?
A) maintenance of bone â€" calcium B) glucose synthesis â€" iodine C) thyroid hormone synthesis â€" iron D) nucleic acid synthesis â€" sulfur
Treponema pallidum, a bacterium associated with syphilis, is not considered a pathogen because to date it remains unculturable in the lab, and, therefore, Koch's postulates are unable to be fulfilled
Indicate whether the statement is true or false.
To reinforce cell identity, vertebrate cells can methylate which nucleotide?
A. cytosine that falls next to guanine in the sequence CG B. any cytosine C. any cytosine or guanine D. guanine that falls next to cytosine in the sequence CG E. any guanine
The figure shows a simplified phylogeny of closely related species of primates. This tree was proposed by comparing DNA sequence changes in the gene for cytochrome oxidase subunit II. The vertical scale represents time and the branch points represent common ancestors. What species did ancestor B give rise to?
A. All of the species except siamangs. B. Siamangs and orangutans. C. All of the species except siamangs and pigmy chimps. D. All of the species except orangutans. E. Gorillas, humans, and both types of chimps.