Bacteria General Knowledge(GK) Objective Type Questions & Answers

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Questions
21 Study of living microorganisms using
A Hanging Drop Technique
B Burri’ S Technique
C Gram’ S Technique
D Morozov’s Technique

Answer: Hanging Drop Technique
22 Spirochetes can be visualized by
A Dark Field Microscopy
B Silver Impregnation By Morozov
C Romonovsky – Giemsa And Burry Methods
D All The Above

Answer: All The Above
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23 Which of the following is true about fungi
A Eukaryotes
B Prokaryotes
C Obligately parasitic
D Can’t be grown on cell – free media

Answer: Eukaryotes
24 Defective viruses are
A Varuses are genetically deficient and so incapable of producing infections daughtervirion
B Infective agents with protein free, with low molecular weight RNA
C Protein infections particles , lack detectable nucleic acid
D Extrachromosomal genetic elements

Answer: Varuses are genetically deficient and so incapable of producing infections daughtervirion
25 Viroids are
A Varuses are genetically deficient and so incapable of producing infections daughter virion
B Infective agents with protein free, with low molecular weight RNA
C Protein infections particles , lack detectable nucleic acid
D Extrachromosomal genetic elements

Answer: Infective agents with protein free, with low molecular weight RNA
26 Dark ground microscopy is used for detection of
A Spirochetes
B Fangi
C Chlamidia
D Virus

Answer: Spirochetes
27 Which of the following is true about mycoplasma?
A Multiplication is by binary fission
B Totally devoid of cell wall
C Resistant to penicillin and its analogues
D All the above

Answer: All the above
28 Chlamydias are
A Non Motile
B Obligately Parasitic
C Can’ T Be Grown On Cell – Free Media
D All The Above

Answer: All The Above
29 To demonstrate flagella used
A Anjesky’ s staining
B Loefler’s technique
C Burri’s technique
D Morozov’ s staining

Answer: Morozov’ s staining
30 To demonstrate bacterial spores used
A Anjesky’ s staining
B Loefler’s technique
C Burri’s technique
D Morozov’ s staining

Answer: Anjesky’ s staining
31 Zichl-Neelsen staning consist of
A 2 stages
B 3 stages
C 4 stages
D 5 stages

Answer: 3 stages
32 Fixation of the smear is necessary for
A To Killed Bacteria
B For Preventing Bacteria Washing Off During Staining
C For Best Staining
D All Of The Above

Answer: All Of The Above
33 Which of the following is a simple staining method
A Gram
B Zeil –Nelsen
C Neisser
D Burri

Answer: Burri
34 Gram positive microorganisms have
A Violet Color
B Pink-Red Color
C Green Color
D Black Color

Answer: Violet Color
35 A Gram positive bacterium retain crystal violet stain because
A Cell Wall Include Significant Amount Of Teichoic And Lipoteichoic Acids
B Bacteria Have Thick Peptidoglycan Layer
C Periplasmie Space Is Absent
D All Of The Above

Answer: All Of The Above
36 A Gram negative bacterium does not retain crystal violet stain because
A Bacteria Have Thin Peptidoglycan Layer
B Bacteria Have Thick Peptidoglycan Layer
C Periplasmie Space Is Absent
D Cell Wall Include Significant Amount Of Teichoic And Lipoteichoic Acids

Answer: Bacteria Have Thick Peptidoglycan Layer
37 What is responsible for the endotoxin activity of LPS
A Lipid A
B Core Polysaccharide
C O Antigen
D All Of The Above

Answer: Lipid A
38 Which of the following is true about structure Gramm positive cell wall
A Is Composed Of Thick Peptidoglycan Layer
B Periplasmie Space Is Absent
C Include Significant Amount Of Teichoic And Lipoteichoic Acids
D All Of The Above

Answer: All Of The Above
39 The organ of locomotion of bacteria is
A Capsule
B Slime
C Flagella
D Fimbriae

Answer: Flagella
40 Which of the following organisms have thick peptidoglycan in their cell wall?
A Gram-negative bacteria
B Gram-positive bacteria
C Yeast
D Molds

Answer: Gram-positive bacteria
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