Currently, which one of the following methods of evaluating disinfectants is used as a standard best-practice methodology?

a) Use-dilution test
b) Use-diffusion test
c) Disk-dilution test
d) Disk-diffusion test


Ans: a) Use-dilution test

Biology & Microbiology

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Classical conditioning such as the salivating of Pavlov's dog in response to a metronome is based on a(n)

A. operant condition. B. sign stimulus. C. involuntary response. D. dishabituation. E. critical period.

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Classically, nature and nurture have been considered as two very separate factors impacting

phenotype. Considering what we have learned of methylation, is this always the case? What will be an ideal response?

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One of your best friends loves to run long distances. You ask her what she enjoys about running. In addition to good physical fitness, she tells you that after a run she feels extra happy

You suspect that her joy might be related to increased production of ________ by the anterior pituitary gland. A) endorphins B) releasing hormones C) prolactin D) adrenalin

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The genetic code is

A) a set of two base sequences coding for each amino acid. B) used during the translation of DNA to mRNA. C) read in sets of three bases called codons. D) different in different organisms.

Biology & Microbiology