BACTERIA MORPHOLOGY QUIZ

Which of the following is analogous to mesosomes of bacteria?

Golgi apparatus of eukaryotes

Lysosomes of eukaryotes

None of these

Mitochondria of eukaryotes

TRUE ANSWER : ?
YOUR ANSWER : ?

The other name for peptidoglycan is

both (a) & (b)

murein

none of these

mucopeptide

TRUE ANSWER : ?
YOUR ANSWER : ?

Cyanobacteria have

a gram-negative cell wall

No cell wall

Neither (a) nor (b)

a gram-positive cell wall

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YOUR ANSWER : ?

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

Mycoplasma

Proteus

Clostridum

Bacillius

TRUE ANSWER : ?
YOUR ANSWER : ?

The last step in synthesis of peptidoglycan is

attachment of a peptide to muramic acid

binding of penicillin to a membrane protein

attaching two amino acids to form a cross-link

attachment of a portion of peptidoglycan to a membrane lipid

TRUE ANSWER : ?
YOUR ANSWER : ?

The structure responsible for motility of bacteria is

pilli

flagella

sheath

capsules

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is exposed on the outer surface of a gram-negative bacterium?

O-antigen of lipopolysaccharide (LPS)

Electron transport system components

Braun lipoprotein

Polysaccharide portion of lipoteichoic acid (LTA)

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following has peptidoglycan as a major constituent of cell wall?

Gram-positive bacteria

None of these

Fungi

Gram-negative bacteria

TRUE ANSWER : ?
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The common word for bacteria which are straight rod in shape is

bacilli

cooci

spirilla

pleomorphic

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The next to last step in peptidoglycan biosynthesis is

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

synthesis of the NAM-peptide subunit

removal of the subunit from bactoprenol

cross-linking the peptide side chains of peptidoglycan

TRUE ANSWER : ?
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