BACTERIA MORPHOLOGY QUIZ

The common word for bacteria which are straight rod in shape is

pleomorphic

cooci

bacilli

spirilla

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Single or clusters of flagella at both poles is known as

petritrichous

monotrichous

amphitrichous

none of these

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The common word for bacteria which are helically curved rods is

pleomorphic

bacillus

cooci

spirilla

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

Sheath

Stalks

Flagella

All of these

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The cocci which forms a bunch and irregular pattern are

diplococci

Streptococci

Tetracocci

Staphylococci

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Peptidoglycan is found only in the bacterial

cell membrane

glycocalyx

spore

cell wall

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Flagella move the cell by

attaching to nearby particles and contracting

spinning like a propeller

an individual flagellum beating in a whip-like motion

many flagella beating in a synchronous, whip-like motion

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Which of the following is not true about peptidoglycan?

None of these

It is a polymer consisting of N-acetyl glucosamine, N-acetyl muramic acid and amino acids (alanine, lysine, etc.)

It occurs in the form of a bag shaped macro molecule surrounding the cytoplasm membrane

It is present in prokaryotic cell wall

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

About 10%

50% or more

About 20%

11%+ 0.22%

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Cytoplasmic inclusions include

ribosomes

mesosomes

fat globules

all of these

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