Quiz Mikrobiologi 1 Virus, Bakteri, Actinomycetes

18 Questions | By Fabiounsoed | Last updated: Mar 19, 2022 | Total Attempts: 342

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Quiz Mikrobiologi 1 Virus, Bakteri, Actinomycetes - Quiz

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1.

Viruses are simple, acellular, infectious agents
- A.
2.

Viruses are composed of
- A.
3.

Localized areas of cellular destruction and lysis caused by virus infection are called __________
- A.
4.

Viruses may harm their host cells by ____________
- A.
5.

Archaea differ from other bacterial groups in that they have special structural, chemical and metabolic adaptations that enable them to grow in extreme environments
- A.
6.

Viruses can reproduce independently from the host cell
- A.
  
  True
- B.
  
  False
7.

The first step in the animal virus cycle is __________
- A.
  
  Uncoating
- B.
  
  Penetration of the host cell
- C.
  
  Adsorption to the host cell surface
8.

Which of the following is true about the G + C content of organisms?
- A.
  
  G + C content of organisms is easily determined
- B.
  
  G + C content is taxonomically valuable
- C.
  
  G + C content indirectly reflects the base sequence of the organism
- D.
  
  All of these are true about the G + C content of organisms.
9.

Archaea usually grow in a few restricted or specialized habitats, such as
- A.
  
  Anaerobic
- B.
  
  Hypersaline
- C.
  
  Extremely hot
- D.
  
  Exremely cold
- E.
  
  All of these
10.

The deinococci are gram-positive cocci and rods that are distinctive in their unusually great resistance to ____________
- A.
  
  Radiation
- B.
  
  Desiccation
- C.
  
  Radiation and desiccation
- D.
  
  Extreme temperatures
11.

Which of the following is not a group of photosynthetic bacteria?
- A.
  
  The green bacteria
- B.
  
  The purple bacteria
- C.
  
  The cyanobacteria
- D.
  
  All of these are groups of photosynthetic bacteria
12.

The spirochetes include the causative agents for _______
- A.
  
  Syphilis
- B.
  
  Lyme disease
- C.
  
  Both syphilis and Lyme disease.
- D.
  
  Neither syphilis nor Lyme disease.
13.

Proteobacteria are gram-negative bacteria of considerable importance as ________
- A.
  
  Disease agents
- B.
  
  Nitrogen fixers
- C.
  
  Major experimental organisms
- D.
  
  All of these
14.

Which of the following genera grow symbiotically within root nodules of legumes as nitrogen-fixing bacteroids?
- A.
  
  Agrobacterium
- B.
  
  Rhizobium
- C.
  
  Pseudomonas
- D.
  
  Bacteroides
15.

Helicobacter pylori is responsible for ________
- A.
  
  Gastroenteritis.
- B.
  
  Cholera.
- C.
  
  Bacterial dysentery.
- D.
  
  Peptic ulcer disease.
16.

The causative agent for cholera in humans is a member of the genus __________
- A.
  
  Escherichia
- B.
  
  Vibrio
- C.
  
  Enterobacter
- D.
  
  Shigella
17.

Actinomycetes are the primary source of antibiotics we use in medicine
- A.
  
  True
- B.
  
  False
18.

Pseudomonads are a large group of bacteria which can _________
- A.
  
  Spoil refrigerated food
- B.
  
  Cause disease
- C.
  
  Photosynthesize
- D.
  
  A and b
- E.
  
  A and c