Trivia Quiz: Microbiology MCQ Exam!

22 Questions | By Juju.abusafieh | Last updated: Jan 20, 2021 | Total Attempts: 228

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1.

Which phase shows the reproduction rate equal to the equivalent death rate?
- A.
  
  Log phase
- B.
  
  Stationary phase
- C.
  
  Death phase
- D.
  
  Lag
2.

The portion of the growth curve where rapid growth of bacteria is observed is known as:
- A.
  
  Lag
- B.
  
  Log
- C.
  
  Death
- D.
  
  Stationary
3.

Growth is defined as an increase in cellular constituents and may result in an increase in a microorganism’s size, population number, or both.
- A.
  
  True
- B.
  
  False
4.

Aerotolerant anaerobes are microorganisms that grow equally well whether or not oxygen is present.
- A.
  
  True
- B.
  
  False
5.

Barotolerant is an organism that can grow and reproduce at high pressure but do not require them.
- A.
  
  True
- B.
  
  False
6.

Extremophiles are microorganisms that grow under harsh or extreme environmental conditions.
- A.
  
  True
- B.
  
  False
7.

Generation time is the time required for a microbial population to double in size.
- A.
  
  True
- B.
  
  False
8.

An organism has an optimal growth rate when the hydrogen ion concentration is very high. This organism is a(n)
- A.
  
  Osmotolerant
- B.
  
  Acidophile
- C.
  
  Neutrophile
- D.
  
  Alkalophile
9.

The term obligate anaerobe refers to an organism that:
- A.
  
  Doesn't use oxygen but tolerates it.
- B.
  
  Is killed by oxygen
- C.
  
  Prefers to grow without oxygen
10.

In a gram-negative organism, how do small molecules move into the periplasm from outside of the cell?
- A.
  
  They diffuse freely through the peptidoglycan layer
- B.
  
  They pass through porins
- C.
  
  Via binary fission
- D.
  
  They are transported by lipid A
11.

The use of sterile techniques and agar media-enabled early microbiologists to:
- A.
  
  Study pure cultures
- B.
  
  Study mixed cultures
- C.
  
  study agar-metabolizing cultures
12.

Will not use oxygen, but it wont kill them. This is an.
- A.
  
  Obligate aerobe
- B.
  
  Obligate anaerobe
- C.
  
  Aerotolerant anaerobes
- D.
  
  Facultative anaerobe
13.

Which are the only two types of bacteria that humans come into contact with normally?
- A.
  
  Thermophiles and Psychrophiles
- B.
  
  Extreme thermophiles and Psychrotrophs
- C.
  
  Mesophiles and Psychrotrophs
- D.
  
  Thermophiles and Extreme thermophiles
14.

Need oxygen, but only will grow under low oxygen concentrations (soil, water)
- A.
  
  Obligate aerobe
- B.
  
  Aerotolerant anaerobes
- C.
  
  Obligate anaerobe
- D.
  
  Microaerophiles
15.

Bacteria divide by which of the following?
- A.
  
  Sexual reproduction
- B.
  
  Budding
- C.
  
  Binary Fission
- D.
  
  None
16.

Which of the following is NOT a component of bacterial flagella?
- A.
  
  flagellin
- B.
  
  Basal body
- C.
  
  Tubulin
17.

Bacterial pili can be described as
- A.
  
  Composed of tubulin
- B.
  
  Solid, rigid protein structures
- C.
  
  Composed of peptidoglycan
- D.
  
  Specialized fimbriae
18.

Lipid A is also known as?
- A.
  
  Endotoxin
- B.
  
  Teichoic acid
- C.
  
  Tetrapeptide
- D.
  
  Mycolic acid
19.

One lipid found in eukaryotes but NOT in prokaryotes is
- A.
  
  Hopanoid
- B.
  
  Lipopolysaccharide
- C.
  
  Phospholipid
- D.
  
  Steroid
20.

Hopanoids are found in __________ cytoplasmic membranes.
- A.
  
  Eukaryotic
- B.
  
  Bacterial
- C.
  
  Archaeal
- D.
  
  Prokaryotic
21.

Which of the following may have cell walls containing teichoic acids?
- A.
  
  Gram-negative bacteria
- B.
  
  Gram-positive bacteria
- C.
  
  Archaea
- D.
  
  Both Gram-positive and Gram-negative bacteria
22.

Which of the following prokaryotic cells contain an outer membrane?
- A.
  
  Gram-negative bacteria
- B.
  
  Gram-positive bacteria
- C.
  
  both Gram-positive and Gram-negative bacteria