Introduction 1

Question 1

Mist microbs living?

Answer 1

Yes,it must be living

Question 2

What is the different between virulant and opportunstic type of bacteria

Answer 2

Virulent it effect normal qnd sick people
Opportunstic it effect only those who have weak immuni system

Question 3

What tyoe of parasite consider from microbiology?

Answer 3

Protozoa(unicellular)

Question 4

Give example of pharmacetical microbiology?

Answer 4

بنسلين

Question 5

Bacteria is prokaryotic or eukaryotic?

Answer 5

Prokaryotic

Question 6

Does bacteria hase cell membrane?what it have?

Answer 6

No.it has rigid cell wall

Question 7

Bacteria has both DNA and RNA but bacteria hse only one,DNA or RNA?

Answer 7

Yes.you are right

Question 8

What give the bacteria rigid cell wall?

Answer 8

Peptidoglycans

Question 9

Teichoic acid found in……..
Lipopolysaccharide in …….

Answer 9

1.ingram positive
2.in gram negative

Question 10

Whay the external strecure calles assitional structre?

Answer 10

Becase it found in smoe bacteria and not found in other

Question 11

What is the color of gram positve and gram negative bacteria?

Answer 11

Positve blue
Negative red

Question 12

What is the features of gram positve bacteria?

Answer 12

Thick wall cosist of multilayer of peptidoglycan and teichoic acid in outer structure
Appear blue or purplr color after staning

Question 13

What is the featers of gram negative bacteris?

Answer 13

Thin cell wall consist of single layer of polyptidoglycan in outer surface that contain endotoxin

Appear red or pink after staning

Question 14

What is the function of mesosome

Answer 14

carry the enzymes for aerobic respiration and increase the surface area for the same

Question 15

What is the main function of cytoplasmic membran?

Answer 15

Active transport into cell
Energy secretion
Synthesis of of precursor of the cell wall and secretion of enzyme and toxins

Question 16

What is nucleoid?

Answer 16

Where DNA,RNA and protein(enzyme,HLP)located,DNA is asingle chromosome circular DNA

Question 17

What is plaamid?

Answer 17

Are extra chromosomal pieces of circular DNA that encoded toxins and enzyme that casue antibiotic resistant

Question 18

What is transposons?

Answer 18

Are small pieces of DNA that move frequentaly btween chromosomal DNA and plasmid DNA

They carry the antibiotics resistant

Question 19

What is the capsula,function?

Answer 19

Polysaccharidase,act as anticphagocytosis

Question 20

What is quellung reaction?

Answer 20

يستخدم لتحديد البكتريا ما اذا عندها كبسول او لا

Question 21

What is Pilli?

Answer 21

Short like hair filament cover the bacteria,which act as aatchment orgain
Of bacteria to specific receptors on human cell surerface and for cnjugation process during DNA transfer(sex pilus)

Question 22

What is spores?

Answer 22

Resistent structer produced by bacteria response to low nutritions(starvation) also in soil,heat,not kill by boiling,but kill by autoclaving

Question 23

What is the 3 main shap of bacteria?

Answer 23

Cocci…round shape
Bacilli..rods
Spirochetes…spiral

Question 24

What are the different form of cocci?

Answer 24

Diplococci…two bacterial cells attached together

Cluster…arrangement as grape like shape

Chains ….Arrangment with long sequnces

Question 25

What are the form of bacilli?

Answer 25

Rod shape
Comma shape
Short shape(coccobcilli)
Curved bacilli