Microbiology UTA 2460 - Exam 3
Questions And Answers With Verified
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Aerobic respiration is an example of... - ANSWER✔✔ chemoheterotrophy
Bacteria living in a freshwater stream that are moved to salty seawater would... -
ANSWER✔✔ become dehydrated due to the loss of water
The antiparallel arrangement within DNA molecules refers to... - ANSWER✔✔ one
helix that runs from the 5' to 3' direction and the other strand runs from the 3' to
5' direction
When microbes are in a close nutritional relationship, and one benefits but the
other is not harmed, it is called... - ANSWER✔✔ commensalism
The method of removing vegetative microbial life forms and debris is to reduce
contamination to safe levels is termed... - ANSWER✔✔ sanitation
Base pairs in DNA are held together by __ bonds... - ANSWER✔✔ hydrogen
All of the following pertain to transcription except... - ANSWER✔✔ occurs on a
ribosome in the cytoplasm
Place the following forms of radiation in order from the most penetrating to the
least penetrating... - ANSWER✔✔ gamma, X-rays, cathode
, The movement of substances from lower to higher concentration across a
semipermeable membrane that must have a specific protein carrier and cell
expenditure of energy is called... - ANSWER✔✔ active transport
Each of the following is a target of antimicrobial agents except... - ANSWER✔✔
cytoplasm
Who discovered transposons... - ANSWER✔✔ Barbara McClintock
A drug exhibiting which therapeutic index value would be the safest, most
effective to use on a patient... - ANSWER✔✔ 20
Which of the following microorganisms would find hypotonic conditions most
detrimental... - ANSWER✔✔ protozoa
The shortest time required to kill all the microbes in a sample at a specified
temperature is called the... - ANSWER✔✔ thermal death time (TDT)
All __ consist of a thiazolidine ring, a beta-lactam ring, and an R group... -
ANSWER✔✔ penicillins
The development of virulent, toxin-producing bacterial strains due to the
presence of a temperate phage can occur through the process of... - ANSWER✔✔
specialized transduction
Cultures of a bacterial species were incubated in a refrigerator (5C), on a lab
bench top (22C), in a 37C incubator and in a 50C incubator. After incubation,
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