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

Biology & Microbiology

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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.

Biology & Microbiology

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

Biology & Microbiology

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.

Biology & Microbiology

   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

Biology & Microbiology