Question 1

Transverse binary fission results in 4 daughter cells from 1 parent cell.

Accepted Answer

A) True 
 B)False

Question 2

The degree of turbidity in a broth culture correlates to the amount of cell growth.

Accepted Answer

A) True 
 B)False  True

Question 3

An organic nutrient that cannot be synthesized by the organism and must be provided is called a/an

Accepted Answer

A)  Element
B)  Macronutrient
C)  Water
D)  Growth factor
E)  Trace elementF) C) and E)
G) B) and E)

Question 4

When whole cells or large molecules in solution are engulfed by a cell, this endocytosis is specifically termed

Accepted Answer

A)  Pinocytosis
B)  Phagocytosis
C)  Facilitated transport
D)  Facilitated diffusion
E)  ExocytosisF) A) and B)
G) B) and E)

Question 5

Saprobes do not need a carbon source for growth and metabolism.

Accepted Answer

A) True 
 B)False

Question 6

Lithoautotrophs use inorganic nutrients for carbon and energy sources.

Accepted Answer

A) True 
 B)False

Question 7

The phase of the bacterial growth curve in which newly inoculated cells are adjusting to their new environment, metabolizing but not growing is the

Accepted Answer

A)  Lag phase
B)  Log phase
C)  Stationary phase
D)  Death phase
E)  ProphaseF) A) and B)
G) C) and D)

Question 8

A halophile would grow best in

Accepted Answer

A)  Acid pools
B)  Fresh water ponds
C)  Hot geyser springs
D)  Arid, desert soil
E)  Salt lakesF) B) and D)
G) A) and D)

Question 9

Facilitated diffusion is limited by

Accepted Answer

A)  Substrate concentration
B)  Carrier proteins in the membrane
C)  Size of the pores in the membrane
D)  Osmotic pressure
E)  The size of the cellF) A) and D)
G) A) and C)

Question 10

A microorganism that has an optimum growth temperature of 37 ∘\circ∘ C, but can survive short exposure to high temperatures is called a(n)

Accepted Answer

A)  Extremophile
B)  Thermophile
C)  Psychrophile
D)  Facultative psychrophile
E)  Thermoduric F) B) and D)
G) A) and B)

Question 11

When microbes live independently but cooperate and share nutrients, it is called

Accepted Answer

A)  Symbiosis
B)  Satellitism
C)  Antibiosis
D)  Mutualism
E)  SynergismF) B) and C)
G) B) and D) E

Question 12

An organism that uses CO2 for its carbon needs and sunlight for its energy needs would be called a/an

Accepted Answer

A)  Heterotroph
B)  Photoautotroph
C)  Chemoheterotroph
D)  Saprobe
E)  HalotrophF) A) and B)
G) D) and E)

Question 13

The movement of substances from higher to lower concentration across a semi permeable membrane that must have a specific protein carrier but no energy expenditure is called

Accepted Answer

A)  Facilitated diffusion
B)  Diffusion
C)  Active transport
D)  Osmosis
E)  EndocytosisF) A) and B)
G) All of the above

Question 14

Microorganisms that live in severe habitats, such as very hot, acidic or salty environments, are called

Accepted Answer

A)  Thermophiles
B)  Halophiles
C)  Psychrophiles
D)  Extremophiles
E)  BarophilesF) C) and E)
G) A) and E)

Question 15

The production of antibiotics is a form of antagonism called

Accepted Answer

A)  Symbiosis
B)  Satellitism
C)  Antibiosis
D)  Mutualism
E)  SynergismF) D) and E)
G) B) and C)

Question 16

A closed culture system is used to determine a population growth curve.

Accepted Answer

A) True 
 B)False

Question 17

After binary fission, daughter cells will differ genetically.

Accepted Answer

A) True 
 B)False

Question 18

Most microorganisms on earth can only live and survive in habitats that are similar to human body conditions.

Accepted Answer

A) True 
 B)False

Question 19

The direct cell count, using a cytometer, can calculate viable cell numbers from a sample.

Accepted Answer

A) True 
 B)False

Question 20

Contractile vacuoles are

Accepted Answer

A)  Used to expel excess water from cells
B)  Found in bacterial cells
C)  Important to certain organisms in hypertonic environments
D)  Protein carriers in cell membranes
E)  Used to bring solutes into a cellF) D) and E)
G) A) and E) A

Exam 7: Microbial Nutrition, Ecology, and Growth

Transverse binary fission results in 4 daughter cells from 1 parent cell.

Correct AnswerverifiedShow Answer

The degree of turbidity in a broth culture correlates to the amount of cell growth.

Correct AnswerverifiedTrue

An organic nutrient that cannot be synthesized by the organism and must be provided is called a/an

Correct AnswerverifiedShow Answer

When whole cells or large molecules in solution are engulfed by a cell, this endocytosis is specifically termed

Correct AnswerverifiedShow Answer

Saprobes do not need a carbon source for growth and metabolism.

Correct AnswerverifiedShow Answer

Lithoautotrophs use inorganic nutrients for carbon and energy sources.

Correct AnswerverifiedShow Answer

The phase of the bacterial growth curve in which newly inoculated cells are adjusting to their new environment, metabolizing but not growing is the

Correct AnswerverifiedShow Answer

A halophile would grow best in

Correct AnswerverifiedShow Answer

Facilitated diffusion is limited by

Correct AnswerverifiedShow Answer

A microorganism that has an optimum growth temperature of 37 ∘\circ∘ C, but can survive short exposure to high temperatures is called a(n)

Correct AnswerverifiedShow Answer

When microbes live independently but cooperate and share nutrients, it is called

Correct AnswerverifiedE

An organism that uses CO2 for its carbon needs and sunlight for its energy needs would be called a/an

Correct AnswerverifiedShow Answer

The movement of substances from higher to lower concentration across a semi permeable membrane that must have a specific protein carrier but no energy expenditure is called

Correct AnswerverifiedShow Answer

Microorganisms that live in severe habitats, such as very hot, acidic or salty environments, are called

Correct AnswerverifiedShow Answer

The production of antibiotics is a form of antagonism called

Correct AnswerverifiedShow Answer

A closed culture system is used to determine a population growth curve.

Correct AnswerverifiedShow Answer

After binary fission, daughter cells will differ genetically.

Correct AnswerverifiedShow Answer

Most microorganisms on earth can only live and survive in habitats that are similar to human body conditions.

Correct AnswerverifiedShow Answer

The direct cell count, using a cytometer, can calculate viable cell numbers from a sample.

Correct AnswerverifiedShow Answer

Contractile vacuoles are

Correct AnswerverifiedA

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True

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A microorganism that has an optimum growth temperature of 37^$\circ$C, but can survive short exposure to high temperatures is called a(n)

Correct Answer
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E

An organism that uses CO₂ for its carbon needs and sunlight for its energy needs would be called a/an

Correct Answer
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A