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Intro to Micro Phsyiology of Bacteria LU 2

Total questions: 17

Worksheet time: 9mins

Name
Class
Date
1.

What is an organism that can survive only on dead or decaying organic matter?

a)

obligate saphrophyte

b)

obligate parasite

c)

faculatative saphrophyte

d)

facultative parasite

e)

strict aerobe

2.

Binary fission is a type of asexual reproduction in prokaryotic cells resulting in two individual cells with genetic consistency

a)

True

b)

False

3.

Those bacteria that grow best at relatively high temperatures are called:

a)

autotrophic bacteria

b)

microaerophilic bacteria

c)

psychrophilic bacteria

d)

mesophilic bacteria

e)

thermophilic bacteria

4.

What is a microorganism that prefers an environment devoid or lacking oxygen but has adapted so that it can live and grow in the presence of oxygen?

a)

Facultative aerobe

b)

Facultative anaerobe

c)

strict aerobe

d)

strict anaerobe

5.

The movement of water through a semi-permeable membrane from an area of lower solute concentration to an area of higher solute concentration defines

a)

diffusion

b)

osmosis

c)

osmotic pressure

d)

surface tension

6.

The temperature at which a species grows best is called

a)

minimum temperature

b)

optimum temperature

c)

maximum temperature.

d)

thermal death point

7.

An organism that prefers the presence of oxygen but is capable of living and growing in its absence is called


a)

facultative anaerobes

b)

facultative parasites

c)

obligate saprophytes

d)

strict aerobes

e)

microaerophiles

8.

Whcih of the following interspecies relationship is between two or more organisms of different species in which they grow better together but can survive alone?

a)

mutalism

b)

commensalism

c)

synergism

d)

antagonism

e)

parasitism

9.

An organism that can build organic compounds in their protoplasm from simpler inorganic matter

a)

heterotrophs

b)

autotrophs

c)

saprophytes

d)

parasites

10.

What is the force applied to a solution to inhibit inward movement of water across a semipermeable membrane called?

a)

osmotic pressure

b)

surface tension

c)

osmotic tension

d)

surface pressure

11.

What is an organism that grows best in an oxygen-reduced environment, requiring very little free oxygen refered to as?

a)

microaeaophilic

b)

anaerobe

c)

aerobe

d)

cryophiles

12.

What is the lowest temperature at which the organism can survive and replicate called?

a)

Minimum temperature

b)

Maximum Temperature

c)

Optimum Temperature

d)

Thermal death point

13.

These organisms thrive at a temperature between 0°C (32°F) and 25°C (77°F).   They prefer the cold.

a)

Psychrophiles

b)

Mesophile

c)

Thermophiles

d)

Microaerophilic

14.

In which of the following relationships is one in which organisms of two different species live in close association to the mutual benefit of each?

a)

Antagonism

b)

 Commensalism

c)

Mutualism

d)

Synergism

e)

Parasitism

15.

Which of the following lights are highly destructive to bacteria?

a)

violet

b)

direct sunlight

c)

daylight

d)

100 watt bulb

16.

What is an organism that is completely dependent on its living host for survival called?

a)

obligate parasite

b)

obligate saprophyte

c)

faculatative saprophyte

d)

faculatative parasite

17.

What does it mean for something to be anaerobic?

a)

It requires CO2

b)

It does not require CO2

c)

It requires oxygen

d)

It does not require oxygen