Chapter 9 Quiz Growth.

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Below are the questions for the exam with the choices of answers:

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Question #1

Which of the following is a direct, statistical method commonly used to measure with 95% probability a range of the number of bacteria in a liquid culture?

A Direct Microscopic Count

B Dry weight

C Turbidity

D Metabolic activity

E Most Probable Number

F Filtration

Question #2

Which of the following are obligate anaerobes?

A Campylobacter

B Escherichia

C Lactobacillus

D Clostridium

E Staphylococcus

F Saccharomyces yeast

Question #3

Match the type of microbial oxygen requirement with the expected growth pattern on a semisolid agar deep: Aerotolerant anaerobe

A Growth on bottom of tube

B Growth throughout the tube

C Grows throughout tube, but more growth on top

D Growth in the middle section of tube

Question #4

Match the type of microbial oxygen requirement with the expected growth pattern on a semisolid agar deep: Microaerophile

A Growth in the middle section of tube

B Growth on bottom of tube

C Growth throughout the tube

D Growth mostly on top of tube

Question #5

Match the type of microbial oxygen requirement with the expected growth pattern on a semisolid agar deep: Facultative anaerobe

A Growth mostly on top of tube

B Growth throughout the tube

C Grows throughout tube, but more growth on top

D Growth in the middle section of tube

Question #6

Match the type of microbial oxygen requirement with the expected growth pattern on a semisolid agar deep: Obligate anaerobe

A Growth in the middle section of tube

B Grows throughout tube, but more growth on top

C Growth on bottom of tube

D Growth throughout the tube

Question #7

Match the type of microbial oxygen requirement with the expected growth pattern on a semisolid agar deep: Obligate aerobe

A Growth in the middle section of tube

B Growth mostly on top of tube

C Growth on bottom of tube

D Grows throughout tube, but more growth on top

Question #8

The time required for a bacterial cell to divide or for its population to _____ is called the _____ time.

A double, generation

B mutliply, degeneration

C solidify, turbidity

Question #9

The goal of this technique is to obtain isolated _____ .

A bacteria

B streak

C colonies

Question #10

The most commonly used method of isolation in microbiology is the _____ plate.

A technique

B streak

C catalase

Question #11

Culture media must be sterile, contain appropriate _____ , and once inoculated needs to be incubated at the proper _____ .

A nutrient, condition

B weight, location

C mass, temperature

Question #12

It melts above 95 degrees Celsius, but does not solidify until it reaches _____ Celsius.

A 60

B 40

C 90

D 100

Question #13

This solidifying agent cannot be degraded by most _____ .

A bacteria

B virus

C solvent

D catalase

Question #14

The most commonly used solidifying agent in microbiology is _____ , which is a polysaccharide derived from _____ algae.

A salt, red

B agar, red

C agar, blue

D resin, red

Question #15

In general, _____ solutions are usually the most damaging to bacterial cells.

A hypertonic

B glycolysis

C endoplasmic

D fermenting

Question #16

When an animal cell is placed in pure water it may undergo osmotic _____ , but bacterial cells are protected from this by the presence of their _____ _____ .

A phase, osmotic cell

B lyses, plastic membrane

C lyses, cell wall

D cycle, fatty cells

Question #17

When a bacterial cell is placed in a hypertonic solution it undergoes _____ .

A osmosis

B plasmolysis

C regeneration

D degeneration

Question #18

Which of the following enzymes breaks down hydrogen peroxide into water and oxygen?

A Peroxidase

B Lipase

C Catalase

D Oxygenase

E Lactase

F Protease

Question #19

Match the organism to the oxygen requirement: Aerotolerant anaerobe

A Does not use oxygen, but not harmed by it

B Cannot grow in the presence of oxygen