Chp 6 Micro

Front 1

In microbiology, growth usually refers to

Back 1

Increase in numbers

Front 2

A cell that uses inorganic carbon source and obtains energy from light would be called

Back 2

Photoheterotroph

Front 3

Which of the following elements is never a limiting nutrient in cells

Back 3

Hydrogen

Front 4

In aquatic microbe that can only grow at the surface of water is probably which of the following

Back 4

Phototroph

Front 5

Which of the following forms of oxygen is detoxify to by the enzyme catalase

Back 5

Peroxide anion

Front 6

Used to protect organisms from the toxic by products of

Back 6

Protease

Front 7

Examples of growth factors used by microbes

Back 7

Heme, NaDH, Vitamins ,amino acids

Front 8

At temperatures higher than the maximum growth temperature for an organism

Back 8

Proteins are denatured, cell membrane is damaged, hydrogen bonds broken, death

Front 9

Human pathogens are classified as

Back 9

Mesophiles

Front 10

Barophile refers to

Back 10

Hydrostatic pressure

Front 11

Forgan isms that can grow with or without oxygen present

Back 11

Facultative anaerobes, aerotolerant anaerobes

Front 12

A fastidious organism might be grown on which of the following types of media

Back 12

Enriched media

Front 13

All of the following would be expected to grow in a candle jar

Back 13

Aerotolerant, facultative anaerobes,

Front 14

Another term for the logarithmic growth of bacterial cells

Back 14

Exponential growth

Front 15

A device that removes fresh Wastes and adds fresh medium to bacterial cultures in order to prolong the log phase of a culture is called

Back 15

Chemostat

Front 16

1 ml is

Back 16

1000ml

Front 17

During which growth phase are bacteria more susceptible to anti microbial drugs

Back 17

Exponential growth phase

Front 18

The use of salt and sugar in the preservation of various types of foods is an example of which of the following concepts

Back 18

Osmotic pressure

Front 19

All of the following are associated with the isolation of pure cultures

Back 19

Pouring plates, agar, streak plates

Front 20

True statements about biofilms

Back 20

Bio film contains different bacteria, attach to surfaces, photo synthesis

Front 21

True statements concerning binary fission of Microbial cells

Back 21

Cell division, dna duplicated, elongation is preserved, common cells may be attached

Front 22

All of the following ingredients are found in complex media

Back 22

Animal blood, human blood, soil extract, milk proteins, seaweed

Front 23

Which of the following quantification techniques can distinguish between living and dead cells in a culture

Back 23

Metabolic activities