Prokaryotic Cell Envelope

Question 1

A prokaryotic cell envelope has ________layers & hence it is known as ____________

Answer 1

3 ; Trilaminar structure

Question 2

Outermost layer of the prokaryotic cell envelope

Answer 2

Glycocalyx

Question 3

True or False

Glycocalyx , cell wall & cell membrane function together as a single unit

Answer 3

TRUE

Question 4

What is Glycocalyx made up of ?

Answer 4

Lipopolysaccharide

Question 5

What do Lipo & polysaccharide indicate respectively ?

Answer 5

Lipids ; Carbohydrates

Question 6

Modication of Glycocalyx on basis of thickness where the layer is loose

Answer 6

Slime Layer

Question 7

Modification of Glycocalyx on basis of thickness where the layer is thick , tough , tightly bound

Answer 7

Capsule

Question 8

Cell wall is made up of ________ which is also known as __________

Answer 8

Peptidoglycan ; murein

Question 9

What is the gram stain used to indicate?

Answer 9

thickness of cell wall ( peptidoglycan)

Question 10

Colour of gram stain

Answer 10

violet/purple

Question 11

Bacteria that absorb gram stain

Answer 11

Gram positive

Question 12

Bacteria that don’t absorb gram stain

Answer 12

Gram negative

Question 13

Gram positive bacteria have ____ colour & their cell wall is ______

Answer 13

Purple ; thick

Question 14

Gram negative bacteria have ____ colour & their cell wall is ______

Answer 14

Pink ; thin

Question 15

Gram negative bacteria become pink due to addition of ________

Answer 15

Saffranin