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Free download in PDF Bacteria Multiple Choice Questions & Answers for competitive exams. These Bacteria General Awareness Objective Questions with Answers are important for competitive exams of Microbiology, Biology, Life Science, Bacteriology etc. These short solved questions or quizzes are provided by Gkseries.
(1)
All the bacteria fix nitrogen except
[A]
Rhizobium
[B]
E.coli
[C]
Azotobacter
[D]
cyanobacteria
(2)
The iodine used in Gram staining serves as a
[A]
Chelator
[B]
Catalyst
[C]
Mordant
[D]
Cofactor
(3)
The ability of bacteria to change their morphological form frequently is termed as
[A]
Lysogeny
[B]
Pleomorphism
[C]
Alteromorphism
[D]
None Of These
(4)
Surface appendage of bacteria meant for cell-cell attachment during conjugation is
[A]
Pili
[B]
Flagella
[C]
Spinae
[D]
Cilia
(5)
Bacterial chromosome is
[A]
Single Stranded And Circular
[B]
Double Stranded And Circular
[C]
Single Stranded And Linear
[D]
Double Stranded And Linear
Answer: Double Stranded And Circular
(6)
The region where bacterial genome resides is termed as
[A]
Nucleus
[B]
Cytoplasm
[C]
Nucleoid
[D]
Ribosome Free Region
(7)
Membraneous infolding in bacteria that initiate DNA replication is
[A]
Mesosomes
[B]
Carboxysome
[C]
Magnetosome
[D]
Nulcleosome
(8)
Mark the common feature between eukaryotes and prokaryotes.
[A]
Shape of DNA
[B]
Number of chromosomes
[C]
A prokaryotic cell is similar to a eukaryotic organelle
[D]
Cell wall
Answer: A prokaryotic cell is similar to a eukaryotic organelle
(9)
The largest bacteria which can be visible by unaided eye is_______
[A]
Thiomargarita namibiensis
[B]
Lactobacillus
[C]
Mycoplasma
[D]
Pseudomonas
Answer: Thiomargarita namibiensis
(10)
Name the scientist who proposed the phylogenetic tree for living things.
[A]
Carlo Urbani
[B]
Louis Pasteur
[C]
Robert Koch
[D]
Carl Woese
(11)
Which of the following is NOT the basic shape of the bacteria?
[A]
Rod shape
[B]
Square shape
[C]
Comma shape
[D]
Spiral shape
(12)
Name the acid present in the cell wall of bacteria which helps in retaining its color during the acid-fast test?
[A]
Mycolic acid
[B]
Teichoic acid
[C]
Malic acid
[D]
Tartaric acid
(13)
LPS (endotoxin) consist of
[A]
Lipid A
[B]
Core Polysaccharide
[C]
O Antigen
[D]
All Of The Above
(14)
Which of the following is true about structure Gramm negative cell wall
[A]
Thick Peptidoglycan Layer
[B]
Periplasmie Space Is Absent
[C]
Include Outer Membrane
[D]
All Of The Above
Answer: Include Outer Membrane
(15)
Gram negative microorganisms
[A]
Violet Color
[B]
Pink-Red Color
[C]
Green Color
[D]
Black Color
(16)
Gram’s staining consist of
[A]
2 stages
[B]
3 stages
[C]
4 stages
[D]
5 stages
(17)
The spore protects the genomic DNA from
[A]
Intense Heat
[B]
Radiation
[C]
Chemical Agents
[D]
All Of The Above
(18)
The spore has
[A]
Inner Membrane
[B]
Two Peptidoglican Layers
[C]
Outerkeratin- Like Coat
[D]
All Of The Above
(19)
To demonstrate volutin granules used
[A]
Anjesky’ s staining
[B]
Loefler’s technique
[C]
Burri’s technique
[D]
Morozov’ s staining
Answer: Loefler’s technique
(20)
To demonstrate capsule used
[A]
Anjesky’ s staining
[B]
Loefler’s technique
[C]
Burri’s technique
[D]
Morozov’ s staining
Answer: Burri’s technique
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