The term that literally means "against putrefaction" is
A) antisepsis.
B) prokaryote.
C) chemotherapy.
D) recombinant technology.
E) nosocomial.
A
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Quality control is set up on a new lot of an indole reagent. Clostridium bifermentans and Clostridium bolteae are used, and the following results are obtained: • C. bifermentans: positive • C. bolteae: negative Which one of the following statements explains this discrepancy?
a. The reagent is most likely expired. b. The incubation time is most likely abbre-viated. c. These two organisms are poor choices; both are indole-positive. d. No discrepancy is present. The results ob-tained are correct.
Which of the following assembles a short RNA chain as the first nucleotides in a new DNA strand?
a. topoisomerase b. primase c. DNA polymerase d. helicase e. DNA ligase
Actin is a structural subunit of
a. myosin. b. microtubules. c. intermediate filaments. d. microfilaments. e. all of these.
In stage 1 of photosynthesis, a proton gradient is generated and ATP is synthesized. Where do protons become concentrated in the chloroplast?
(a) thylakoid space (b) stroma (c) inner membrane (d) thylakoid membrane