BIOS 225 TEST - –Answer pathogen 2. Fastidious microbes are g...

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BIOS 225 TEST

• Which of the following microbe types always causes diseases?

–Answer pathogen

• Fastidious microbes are grown in which type of medium?

–Answer enriched

• Which aren't capable of growth when superoxide radicals are produced within the cell?

–Answer strict anaerobe

• Neutralophiles prefer which pH?

–Answer 7

• Which type of microorganisms can't survive in the presence of oxygen?

–Answer - obligate anaerobes

• With respect to cell structure, how are viruses characterized?

–Answer noncellular

• Which term describes communities of various types of microorganisms that can adhere to

living and nonliving surfaces?–Answer biofilm

• MacConkey agar is both selected and differential. What makes it different?-
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–Answer lactose

• Which of the following microorganisms lack organelles?

–Answer bacteria

• In which stage of the microbial growth curve does the rate of cell replica- tion equal the

rate of the cell death?–Answer stationary

• What is a synthetic medium?

–Answer a medium in which all chem components are clearly defined and added in precise amounts

• Which of Kochs postulates described why multiple students have similar symptoms and

the same test results, while others have similar symptoms and the. same test results, while others have had no symptoms and are prob not infected?–Answer the microbe is found in all cases of the disease but is absent from healthy individuals

• Human pathogens are considered?

–Answer mesophiles

• Environments free of microorganisms are known as ...environments

–Answer asep- tic

• MacConkey medium is used to select and isolate which?

–Answer gram negative bacteria

• Which correctly explains how archaea differ from bacteria a and eukry- otes?

–Answer no archaea are currently known to be capable of pathogens

• In which growth phase are bacteria susceptible to antibiotics?
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