Introduction 1 Flashcards
Mist microbs living?
Yes,it must be living
What is the different between virulant and opportunstic type of bacteria
Virulent it effect normal qnd sick people
Opportunstic it effect only those who have weak immuni system
What tyoe of parasite consider from microbiology?
Protozoa(unicellular)
Give example of pharmacetical microbiology?
بنسلين
Bacteria is prokaryotic or eukaryotic?
Prokaryotic
Does bacteria hase cell membrane?what it have?
No.it has rigid cell wall
Bacteria has both DNA and RNA but bacteria hse only one,DNA or RNA?
Yes.you are right
What give the bacteria rigid cell wall?
Peptidoglycans
Teichoic acid found in……..
Lipopolysaccharide in …….
1.ingram positive
2.in gram negative
Whay the external strecure calles assitional structre?
Becase it found in smoe bacteria and not found in other
What is the color of gram positve and gram negative bacteria?
Positve blue
Negative red
What is the features of gram positve bacteria?
Thick wall cosist of multilayer of peptidoglycan and teichoic acid in outer structure
Appear blue or purplr color after staning
What is the featers of gram negative bacteris?
Thin cell wall consist of single layer of polyptidoglycan in outer surface that contain endotoxin
Appear red or pink after staning
What is the function of mesosome
carry the enzymes for aerobic respiration and increase the surface area for the same
What is the main function of cytoplasmic membran?
Active transport into cell
Energy secretion
Synthesis of of precursor of the cell wall and secretion of enzyme and toxins
What is nucleoid?
Where DNA,RNA and protein(enzyme,HLP)located,DNA is asingle chromosome circular DNA
What is plaamid?
Are extra chromosomal pieces of circular DNA that encoded toxins and enzyme that casue antibiotic resistant
What is transposons?
Are small pieces of DNA that move frequentaly btween chromosomal DNA and plasmid DNA
They carry the antibiotics resistant
What is the capsula,function?
Polysaccharidase,act as anticphagocytosis
What is quellung reaction?
يستخدم لتحديد البكتريا ما اذا عندها كبسول او لا
What is Pilli?
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)
What is spores?
Resistent structer produced by bacteria response to low nutritions(starvation) also in soil,heat,not kill by boiling,but kill by autoclaving
What is the 3 main shap of bacteria?
Cocci…round shape
Bacilli..rods
Spirochetes…spiral
What are the different form of cocci?
Diplococci…two bacterial cells attached together
Cluster…arrangement as grape like shape
Chains ….Arrangment with long sequnces
