L3

Question 1

What are mesosomes?

Answer 1

extensions/invagination of cell membrane

Question 2

types of mesosomes

Answer 2

1. vesicles
2. lamellae
3. tubule

Question 3

difference between PILI and FIMBRIAE?

Answer 3

PILI
1.LONG, tubular, elongated, made of pilin protein

FIMBRIAE
1. SHORT, MORE in number, bristlle like

Question 4

which is present more in number? pill or fimbraie?

Answer 4

fimbrae

Question 5

characteristics of pili and fimbrae?

Answer 5

present on surface of bacteria

2. non-locomotory
3. they are hair-like structure.

Question 6

in prokar. flagella are the extension of____

in eukar. flagella are the extension of____

Answer 6

cell wall

cell membra

Question 7

flagella of prok and eukar ? are they same or different

Answer 7

different,

in prok - they are extensions of cell wall
in euk- they are extension of cell memb

Question 8

what is GRAM STAINING METHOD?

Answer 8

bacteria is stained with crystal-violet(violet / purple / red in color),

2. after the bacteria attains the color of dye, it is then alcohol washed,
3. if it retains the color (CRYSTAL VIOLET) ; then we classify it as G+ve
4. if it looses the color (CRYSTAL VIOLET); then again it is stained with SAFRANIN PINK, and we classify it as G-ve.

Question 9

gram staining is classified into 2 types name them? and also tell the basis of its classification:

Answer 9

G+ve and G-ve

on the basis of staining procedure and cell envelope composition