BACTERIA MORPHOLOGY QUIZ

Microcapsules are composed of

all of these

lipids

polysaccharides

proteins

TRUE ANSWER : ?
YOUR ANSWER : ?

The next to last step in peptidoglycan biosynthesis is

removal of the subunit from bactoprenol

synthesis of the NAM-peptide subunit

cross-linking the peptide side chains of peptidoglycan

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

TRUE ANSWER : ?
YOUR ANSWER : ?

In eukaryotic cells, ribosomes are

70S

80S

Not specific

60S

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The cell walls of many gram positive bacteria can be easily destroyed by the enzyme known as

lysozyme

lipase

pectinase

peroxidase

TRUE ANSWER : ?
YOUR ANSWER : ?

Peptidoglycan is also known as

murein mucopeptide

mesodiaminopimetic acid

N acetylglucosamine

N-acetyl muramic acid

TRUE ANSWER : ?
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Chemotaxis is a phenomenon of

swimming away or towards of bacteria in presence of chemical compound

swimming away of bacteria

swimming towards a bacteria

None of these

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YOUR ANSWER : ?

Which of the following has Chinese letter arrangement?

Clostridium tetani

Corynebacterium diphtheriae

Mycobacterium tuberculosis

Bacillus anthracis

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YOUR ANSWER : ?

The last step in synthesis of peptidoglycan is

attaching two amino acids to form a cross-link

binding of penicillin to a membrane protein

attachment of a peptide to muramic acid

attachment of a portion of peptidoglycan to a membrane lipid

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The cell walls of Gram positive bacteria contain two modified sugar, viz. N- acetylgucosamine (NAG) and N- acetylmuramic acid (NAM). They are covalently linked by

α- 1,6-glycosidic bond

β- 1,4-glycosidic bond

α- 1,4-glycosidic bond

β-1,6-glycosidic bond

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YOUR ANSWER : ?

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

Bacillus

None of these

Clostridium

Both (a) and (b)

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YOUR ANSWER : ?