Microbiology

A vibrant illustration of microbes and bacteria in a laboratory setting, showcasing various shapes and colors, emphasizing the diversity of microorganisms and their environments.

Microbiology Mastery Quiz

Test your knowledge of microbiology with our engaging quiz designed for enthusiasts and learners alike. This quiz covers a wide range of topics including bacteria, archaea, viruses, and more.

20 multiple-choice questions
Assess your understanding of fundamental microbiological concepts
Perfect for students and educators

20 Questions5 MinutesCreated by LearningBacterium42

Molecules of extrachromosomal DNA are also known as:

A. Golgi bodies.

B. lysosomes.

C. plasmids.

D. plastids.

2. A bacterium possessing a tuft of flagella at one end of its cell would be called what kind of bacterium?

A. amphitrichous

B. lophotrichous

C. monotrichous

D. peritrichous

3. One way in which an archaean would differ from a bacterium is that the archaean would possess no:

A. DNA in its chromosome.

B. Peptidoglycan in its cell walls.

C. Ribosomes in its cytoplasm.

D. RNA in its ribosomes.

Some bacteria stain Gram-positive and others stain Gram-negative as a result of differences in the structure of their:

A. capsule.

b. Cell membrane.

c. Cell wall.

D. ribosomes.

5. Of the following, which one is not found in procaryotic cells?

A. Cell membrane

B. chromosome

C. mitochondria

D. plasmids

6. The Three-Domain System of Classification is based on differences in which of the following molecules?

A. mRNA

B. peptidoglycan

C. rRNA

D. tRNA

7. Which of the following is in the correct sequence?

A. Kingdom, Class, Division, Order, Family, Genus

B. Kingdom, Division, Class, Order, Family, Genus

C. Kingdom, Division, Order, Class, Family, Genus

D. Kingdom, Order, Division, Class, Family, Genus

8. Which one of the following is never found in procaryotic cells?

A. flagella

B. capsule

C. cilia

D. ribosomes

9. The semipermeable structure controlling the transport of materials between the cell and its external environment is the:

A. Cell membrane.

B. Cell wall.

C. cytoplasm.

D. Nuclear membrane.

10. In eucaryotic cells, what are the sites of photosynthesis?

A. mitochondria.

B. plasmids

C. plastids

D. ribosomes

11 Which one of the following steps occurs during the multiplication of animal viruses, but not during the multiplication of bacteriophages?

A. assembly

B. biosynthesis

C. penetration

D. uncoating

12.which one of the following diseases or groups of diseases is not caused by prions?

A. Certain plant diseases

B. Chronic wasting disease of deer and elk

C. Creutzfeldt-Jacob disease of humans

D. “mad cow disease”

13. Most procaryotic cells reproduce by:

A. Binary fission.

b. budding.

C. Gamete production.

D. Spore formation.

14.The group of bacteria that lack rigid cell walls and take on irregular shapes is:

A. chlamydias.

B. mycobacteria.

C. mycoplasmas.

D. rickettsias.

15.At the end of the Gram staining procedure, Grampositive bacteria will be:

A. Blue to purple.

B green

C.orange

D. Pink to red.

6. Which one of the following statements about rickettsias is false?

A. Diseases caused by rickettsias are arthropod-borne.

B. Rickets is caused by a Rickettsia species.

C. Rickettsia species cause typhus and typhuslike diseases.

D. Rickettsias have leaky membranes.

17. Which one of the following statements about Chlamydia and Chlamydophila spp. Is false?

A. They are obligate intracellular pathogens.

B. They are considered to be “energy parasites.”

C. The diseases they cause are all arthropod-borne.

D. They are considered to be Gram-negative bacteria.

18. Which one of the following statements about cyanobacteria is false?

A. Although cyanobacteria are photosynthetic, they do not produce oxygen as a result of photosynthesis.

B. At one time, cyanobacteria were called bluegreen algae.

C. Some cyanobacteria are capable of nitrogen fixation.

D. Some cyanobacteria are important medically because they produce toxins.

19. Which one of the following statements about archaea is false?

A. Archaea are more closely related to eucaryotes than they are to bacteria.

B. Both archaea and bacteria are procaryotic organisms.

C. Some archaea live in extremely hot environments.

D. The cell walls of archaea contain a thicker layer of peptidoglycan than the cell walls of bacteria.

An organism that does not require oxygen, grows better in the absence of oxygen, but can survive in atmospheres containing some molecular oxygen is known as a(n):

A. Aerotolerant anaerobe.

B. capnophile.

C. Facultative anaerobe.

D. microaerophile.

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