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Microbiology Fundamentals 4th Edition Cowan

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Microbiology Fundamentals 4th Edition Cowan

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  • August 17, 2024
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Test Bank For Microbiology Fundamentals 4th Edition Cowan
| 9781260702439 | All Chapters with Answers and Rationals

The enzyme _____ converts hydrogen peroxide formed during aerobic respiration to water and
oxygen - ANSWER: catalase

which term describes chemical substances such as carbon, hydrogen, and oxygen that are required in
large quantities by cells? - ANSWER: macronutrient

a microbes nutritional type (e.g., chemoheterotroph) is determined by its sources of ____ and ____ -
ANSWER: carbon
energy

put the stages of binary fission in the correct order - ANSWER: 1. cell wall, membrane , and overall
volume are enlarged; chromosomes are duplicated
2. septum begins to form and chromosomes are pulled to opposite ends of the ell; components are
randomly divided
3. septum is completely formed and the cell membrane begins to patch itself
4. daughter cells are divided

most organisms are neutrophiles, growing in habitats between pH ____ - ANSWER: 6 and 8

micronutrients (zinc, manganese) that are required by cells in small amounts are termed ____
elements - ANSWER: trace

which two of the following statements regarding heterotrophs are true? - ANSWER: large organic
molecules (like starch, a polymer of glucose) must be digested before absorption
monosaccharides are generally good carbon sources for heterotrophs

____ phase follows inoculation and is when the population appears not to be growing - ANSWER: lag

which of the following would move across the cell membrane by facilitated diffusion? - ANSWER:
glucose

which two of the following are transport functions of the cell membrane? - ANSWER: import nutrients
export waste materials

what word is used to describe organisms which do NOT use oxygen in their cellular respiration
pathways? - ANSWER: anaerobic

a(n) ____ is a microorganism that thrives under high hydrostatic pressure - ANSWER: barophile

a ____ curve is a graphical representation of the change in population size over time - ANSWER:
growth

choose the two molecules that require sulfur atoms - ANSWER: cysteine
vitamin B1

put the following phases in order for a normal bacterial growth curve - ANSWER: lag
exponential
stationary
death

which of the following organisms does not utilize oxygen regardless of availability - ANSWER:
aerotolerant anaerobe

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