Microbiology quiz 1 ( Part 2 )

Question 1 of 28

1

How do we study microbes and all the jazz?

Select one or more of the following:

Culture them
Ingest them
Look at them under a microscope
Study their DNA, RNA, and proteins!

Explanation

Question 2 of 28

1

Complex media is harder to make and every single ingredient is measured.

Select one of the following:

True
False

Explanation

Question 3 of 28

1

General Media has which of the following characteristics?

Select one or more of the following:

Super selective
Great Plate Count Anomaly
Still can’t culture everything
Cultures as many microbes as possible

Explanation

Question 4 of 28

1

Enrichment media has which of the following characteristics/example(s)?

Select one or more of the following:

Culture fastidious organisms
Chocolate agar
Mannitol Agar
Add things to the media to enable specific types of bacteria to grow

Explanation

Question 5 of 28

1

❌ media selects for certain bacteria and selects against other bacteria.

Drag and drop to complete the text.

Selective

Enriched

Differential

General

Explanation

Question 6 of 28

1

Differential media usually is dependent on bacterial metabolic activity.

Select one of the following:

True
False

Explanation

Question 7 of 28

1

Differential media is not similar or at all like selective media.

Select one of the following:

True
False

Explanation

Question 8 of 28

1

Fill the blank spaces to complete the text.

Choose the correct terms for the following characteristics of autoclaving.
Autoclaving uses high and high temperature to kill even .
heat has more energy than dry heat. This kills everything but can be for delicate or reactive compounds. Autoclaving can also cause to . Also, trace metals that are -sensitive might react and become unavailable.

Explanation

Question 9 of 28

1

If autoclaving can denture vitamins and ruin or cause trace metal react, then what is another method of sterilization that would be better suited to handle this problem?

Select one of the following:

UV light
Filter sterilization
Bleach
Clorox Bleach-Free Fabric Sanitizer

Explanation

Question 10 of 28

1

Which of the following is TRUE about filtered sterilization?

Select one or more of the following:

Used for reactive compounds (vitamins or trace metals)
Removes the cells from the liquid, as autoclaving kills cells but doesn’t necessarily destroy them.
Requires UV lamp
Need cell-free water to do dilutions for microscope counts

Explanation

Question 11 of 28

1

Which is not a form of UV light sterilization?

Select one of the following:

UV-2
UV-A
UV-C
UV-B

Explanation

Question 12 of 28

1

Select from the dropdown lists to complete the text.

Order the strength of UV light sterilization in increasing order in terms of effectiveness of killing microbes:
1) Lowest --> ( UV-A, UV-B, UV-C )
2) Medium --> ( UV-B, UV-A, UV-C )
3) Highest --> ( UV-C, UV-A, UV-B )

Explanation

Question 13 of 28

1

UV-A is the least effective in killing microbes but has the deepest penetrance. UV-C is the most effective in killing microbes but has the lowes penetrance.

Select one of the following:

True
False

Explanation

Question 14 of 28

1

Fill the blank spaces to complete the text.

Hypothermiphiles and thermophiles grow in environments.
Psychrophiles grow in environments.
Halophiles love .
Osmophiles love .
Xerophiles grow in environments.

Explanation

Question 15 of 28

1

What is true about thermophiles?

Select one or more of the following:

They love cold environments
They have unsaturated fatty acids
They have saturated fatty acids
They use unsaturated fatty acids to increase the melting temperature of the cell membrane.

Explanation

Question 16 of 28

1

The closer to 1, the purer the water solution.

Select one of the following:

True
False

Explanation

Question 17 of 28

1

Why do we use salt and sugar in food preservation?

Select one of the following:

Gives it a good flavor
They feed the bacteria
Reduces the food from looking bad
Reduces water activity

Explanation

Question 18 of 28

1

We can use microbes to preserve our food by them producing acid. This method of food preservation is called?

Select one of the following:

Fermentation
Salting
Sugaring
Acidification

Explanation

Question 19 of 28

1

Canned fruits naturally have higher acid than canned meat or vegetables as they have naturally occurring acidity prevents the growth of this bacteria.

Select one of the following:

E. coli
C. botulinum
Listeria
Anaerobes

Explanation

Question 20 of 28

1

What is pasteurization?

Select one of the following:

Heating food at a HIGH temperature for a LONG time to kill bacteria without destroying the nutritional value or dramatically altering the flavor of the food
Heating food at a LOW temperature for a SHORT time to kill bacteria without destroying the nutritional value or dramatically altering the flavor of the food
Heating food at a HIGH temperature for a SHORT time to kill bacteria without destroying the nutritional value or dramatically altering the flavor of the food
Heating food at a LOW temperature for a LONG time to kill bacteria without destroying the nutritional value or dramatically altering the flavor of the food

Explanation

Question 21 of 28

1

What is true about anaerobes?

Select one or more of the following:

Boiling water to remove gas is needed to make anaerobic media.
Anaerobes need air to survive
Some obligate anaerobes have superoxide reductase
Obligate anaerobes can thrive in the presence of oxygen
They cannot utilize oxygen as an electron acceptor

Explanation

Question 22 of 28

1

Which type of organism contains a protein-free manganese complex instead of superoxide dismutase?

Select one of the following:

Aerobes
Microaerophiles
Aerotolerant
Obligate anaerobes

Explanation

Question 23 of 28

1

Fill the blank spaces to complete the text.

Aerobes and facultative aerobes always have and .

Explanation

Question 24 of 28

1

Fill the blank spaces to complete the text.

Some aerotolerant organisms have instead of

Explanation

Question 25 of 28

1

Fill the blank spaces to complete the text.

Obligate anaerobes have instead of .

Explanation

Question 26 of 28

1

Which of these organisms utilize oxygen as a terminal electron acceptor?

Select one or more of the following:

Aerotolerant
Aerobes
Facultative aerobes
Microaerophiles

Explanation

Question 27 of 28

1

Select from the dropdown lists to complete the text.

Bacteriocidal ( kills, destroys, breaks down ) the bacteria, bacteriostatic ( stops, grows, slows ) bacterial growth, and bacteriolytic ( destroys, hides, nurse ) the cells.

Explanation

Question 28 of 28

1

Fill the blank spaces to complete the text.

destroy all microorganisms including endospores
are used on surfaces to kill microorganisms but not necessarily endospores
reduce microbial numbers but do not sterilize
kill or inhibit microbial growth, but are non-toxic enough to be applied to living tissue

	Created by Laura Pepe over 4 years ago

Univeristy Microbiology Quiz on Microbiology quiz 1 ( Part 2 ), created by Laura Pepe on 30/01/2020.

Microbiology quiz 1 ( Part 2 )

Question 1 of 28

How do we study microbes and all the jazz?

Select one or more of the following:

Explanation

Question 2 of 28

Complex media is harder to make and every single ingredient is measured.

Select one of the following:

Explanation

Question 3 of 28

General Media has which of the following characteristics?

Select one or more of the following:

Explanation

Question 4 of 28

Enrichment media has which of the following characteristics/example(s)?

Select one or more of the following:

Explanation

Question 5 of 28

❌ media selects for certain bacteria and selects against other bacteria.

Drag and drop to complete the text.

Explanation

Question 6 of 28

Differential media usually is dependent on bacterial metabolic activity.

Select one of the following:

Explanation

Question 7 of 28

Differential media is not similar or at all like selective media.

Select one of the following:

Explanation

Question 8 of 28

Fill the blank spaces to complete the text.

Explanation

Question 9 of 28

If autoclaving can denture vitamins and ruin or cause trace metal react, then what is another method of sterilization that would be better suited to handle this problem?

Select one of the following:

Explanation

Question 10 of 28

Which of the following is TRUE about filtered sterilization?

Select one or more of the following:

Explanation

Question 11 of 28

Which is not a form of UV light sterilization?

Select one of the following:

Explanation

Question 12 of 28

Select from the dropdown lists to complete the text.

Order the strength of UV light sterilization in increasing order in terms of effectiveness of killing microbes: 1) Lowest --> UV-A UV-B UV-C( UV-A, UV-B, UV-C ) 2) Medium --> UV-B UV-A UV-C( UV-B, UV-A, UV-C ) 3) Highest --> UV-C UV-A UV-B( UV-C, UV-A, UV-B )

Explanation

Question 13 of 28

UV-A is the least effective in killing microbes but has the deepest penetrance. UV-C is the most effective in killing microbes but has the lowes penetrance.

Select one of the following:

Explanation

Question 14 of 28

Fill the blank spaces to complete the text.

Hypothermiphiles and thermophiles grow in environments. Psychrophiles grow in environments. Halophiles love . Osmophiles love . Xerophiles grow in environments.

Explanation

Question 15 of 28

What is true about thermophiles?

Select one or more of the following:

Explanation

Question 16 of 28

The closer to 1, the purer the water solution.

Select one of the following:

Explanation

Question 17 of 28

Why do we use salt and sugar in food preservation?

Select one of the following:

Explanation

Question 18 of 28

We can use microbes to preserve our food by them producing acid. This method of food preservation is called?

Select one of the following:

Explanation

Question 19 of 28

Canned fruits naturally have higher acid than canned meat or vegetables as they have naturally occurring acidity prevents the growth of this bacteria.

Select one of the following:

Explanation

Question 20 of 28

What is pasteurization?

Select one of the following:

Order the strength of UV light sterilization in increasing order in terms of effectiveness of killing microbes:
1) Lowest --> ( UV-A, UV-B, UV-C )
2) Medium --> ( UV-B, UV-A, UV-C )
3) Highest --> ( UV-C, UV-A, UV-B )

Hypothermiphiles and thermophiles grow in environments.
Psychrophiles grow in environments.
Halophiles love .
Osmophiles love .
Xerophiles grow in environments.

Bacteriocidal ( kills, destroys, breaks down ) the bacteria, bacteriostatic ( stops, grows, slows ) bacterial growth, and bacteriolytic ( destroys, hides, nurse ) the cells.

destroy all microorganisms including endospores
are used on surfaces to kill microorganisms but not necessarily endospores
reduce microbial numbers but do not sterilize
kill or inhibit microbial growth, but are non-toxic enough to be applied to living tissue