A duplicate copy of all of the hereditary information contained in the nucleus of eukaryotic cells is made during what stage of the cell cycle?
A. Cytokinesis
B. S
C. Mitosis
D. G1
E. G2
Answer: B
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In the identification of mycobacterial isolates, the Tween 80 test involves:
a. an enzyme that is able to produce Tween 80 from certain ingredients found in the medium. b. a lipase that is able to hydrolyze polyox-yethylene sorbitan monooleate into oleic acid and polyoxyethylated sorbitol. c. the metabolism of niacin to nicotinic acid by enzymatic action. d. testing the isolate for susceptibility to Tween 80.
Four of the five answers listed below possess
some type of coelom. Select the EXCEPTION.
a. crustaceans b. annelids c. arthropods d. mollusks e. cnidarians
Prior to mitosis and after S phase, each chromosome of a eukaryotic cell consists of a pair of identical structures called
A) chromatin. B) sister chromosomes. C) nucleoli. D) sister chromatids.
Trait SpeciesABCDE111011210010310011411111511111600010The table shows the distribution of traits (A-E) in six extant species (1-6). A "0" indicates the ancestral condition, and a "1" indicates the derived condition. Which species would you designate as the outgroup?
A. 1 B. 2 C. 3 D. 4 E. 5 F. 6