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Bacteria Morphology Online Exam Quiz

Important questions about Bacteria Morphology. Bacteria Morphology MCQ questions with answers. Bacteria Morphology exam questions and answers for students and interviews.

1. The bacteria deficient in cell wall is

Options

A : Treponema

B : Mycoplasma

C : Staphylococcus

D : Klebsiella

2. The last step in synthesis of peptidoglycan is

Options

A : attachment of a peptide to muramic acid

B : attaching two amino acids to form a cross-link

C : attachment of a portion of peptidoglycan to a membrane lipid

D : binding of penicillin to a membrane protein

3. The cocci which forms a chain is

Options

A : Streptococci

B : diplococci

C : Staphylococci

D : Tetracocci

4. Which of the following bacteria lack a cell wall and are therefore resistant to penicillin?

Options

A : Cyanobacteria

B : Mycoplasmas

C : Bdellovibrios

D : Spirochetes

5. Porins are located in

Options

A : the outer membrane of gram-negative bacteria

B : the peptidoglycan layer of gram-positive bacteria

C : the cytoplasmic membrane of both gram-negative and gram-positive bacteria

D : the periplasmic space of gram-negative bacteria

6. Chemotaxis is a phenomenon of

Options

A : swimming away of bacteria

B : swimming towards a bacteria

C : swimming away or towards of bacteria in presence of chemical compound

D : none of the above

7. Which of the following bacterial genera (that produces endospore) have medical importance?

Options

A : Clostridium

B : Bacillus

C : Both (a) and (b)

D : None of these

8. Which of the following structure(s) is /are external to cell wall?

Options

A : Flagella

B : Stalks

C : Sheath

D : All of these

9. The common word for bacteria which are spherical in shape is

Options

A : cocci

B : bacilli

C : spirilla

D : pleomorphic

10. Teichoic acids are typically found in

Options

A : cell walls of gram positive bacteria

B : outer membranes of gram positive bacteria

C : cell walls of gram negative bacteria

D : outer membranes of gram negative bacteria

1. Which of the following may contain fimbriae?

Options

A : Gram-positive bacteria

B : Gram-negative bacteria

C : Both (a) and (b)

D : None of these

2. In which of the following, lipo-polysaccharide is a major constituent of outer membrane of the cellwall?

Options

A : Gram-positive bacteria

B : Gram-negative bacteria

C : Fungi

D : None of these

3. Name the component of flagellum.

Options

A : Filament

B : Hook

C : Basal body

D : All of these

4. Peptidoglycan accounts for __________ of the dry weight of cell wall in many gram positive bacteria

Options

A : 50% or more

B : About 10%

C : 11%+ 0.22%

D : About 20%

5. Bacteria having no flagella are unable to

Options

A : move

B : reproduce

C : stick to tissue surfaces

D : grow in nutrient agar

6. Which of the following organism has sterols in their cytoplasmic membrane?

Options

A : Clostridum

B : Proteus

C : Mycoplasma

D : Bacillius

7. Which of the following does not contain protein?

Options

A : Pili

B : Flagellum

C : Lipoteichoic acid

D : Porin

8. A cluster of polar flagella is called

Options

A : lophotrichous

B : amphitrichous

C : monotrichous

D : petritrichous

9. The next to last step in peptidoglycan biosynthesis is

Options

A : synthesis of the NAM-peptide subunit

B : removal of the subunit from bactoprenol

C : linking the sugar of the disaccharide-peptide unit to the growing peptidoglycan chain

D : cross-linking the peptide side chains of peptidoglycan

10. Microcapsules are composed of

Options

A : proteins

B : polysaccharides

C : lipids

D : all of these

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