In a continuous culture system, the rate at which media is added and removed is called the ________ rate.

A. dilution
B. pass-through
C. flow-through
D. chemostatic


Answer: A

Biology & Microbiology

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Microarray analysis is used to

A. determine the size of gene fragments after digesting with restriction endonucleases. B. analyze an organism's entire genome. C. determine which genes are being expressed in an organism. D. analyze an individual's single nucleotide polymorphisms.

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Which of the following statements is true about susceptibility testing or treatment of P. aeruginosa?

a. Susceptibility testing is required to detect intrinsic resistance. b. Repeat susceptibility testing may be needed to monitor development of resis-tance. c. Susceptibility testing of isolates from cys-tic fibrosis patients following standard protocols gives reliable results. d. Treatment with a single antimicrobial agent, such as <-lactam with antipseu-domonal activity, is recommended.

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Facilitated diffusion requires

What will be an ideal response?

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In non-dividing cells, the coiling and folding of DNA is organized into bead-like structures called nucleosomes, which are the result of DNA being wrapped around a protein core of histones.

a. true b. false

Biology & Microbiology