BACTERIA MORPHOLOGY QUIZ

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

O-antigen of lipopolysaccharide (LPS)

Braun lipoprotein

Electron transport system components

Polysaccharide portion of lipoteichoic acid (LTA)

TRUE ANSWER : ?
YOUR ANSWER : ?

The cell wall of

gram-negative bacteria are thicker than gram-positive bacteria

both have same thickness but composition is different

none of these

gram-positive bacteria are thicker than gram-negative bacteria

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is true about cell wall of gram-positive bacteria?

It is thicker than that associated with gram-negative bacteria

It consists of multiple layers

It contains teichoic acids

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Gram positive cells have a

periplasmic space that traps the crystal violet

second outer membrane that helps to retain the crystal violet stain

multiple layer of peptidoglycan that helps to retain the crystal violet stain

thick capsule that traps the crystal violet stain

TRUE ANSWER : ?
YOUR ANSWER : ?

The arrangement, in which flagella are distributed all round the bacterial cell, is known as

monotrichous

amphitrichous

peritrichous

lophotrichous

TRUE ANSWER : ?
YOUR ANSWER : ?

A cluster of polar flagella is called

lophotrichous

monotrichous

amphitrichous

petritrichous

TRUE ANSWER : ?
YOUR ANSWER : ?

Genetic system is located in the prokaryotes in

all of these

nucleoid

nuclear material

chromatin

TRUE ANSWER : ?
YOUR ANSWER : ?

Teichoic acids are typically found in

cell walls of gram negative bacteria

outer membranes of gram positive bacteria

cell walls of gram positive bacteria

outer membranes of gram negative bacteria

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Flagella

Stalks

Sheath

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Bacteria having no flagella are unable to

reproduce

stick to tissue surfaces

grow in nutrient agar

move

TRUE ANSWER : ?
YOUR ANSWER : ?