A bacterium with tuft of flagella at both poles is called
1.Lophotrichus
2.Monotrichous
3.Peritrichous
4.Amphitrichous
A group of 8 cocci is called
1.Diplococci
2.Octococci
3.Tetrad
4.Sarcina
Appearance of gram positive bacteria?
1.Red
2.Green
3.Purple
4.Whitish yellow
Cell wall is absent in
1.Mycoplasma
2.Plant cell
3.Bacilli
4.mycobacterium
Cell wass of Archaeobacteria does not contain
1.Proteins
2.Peptidoglycan
3.Glycoproteins
4.None
Coccobacillus has a shape similar to
1.Diplobacillus
2.Sarcina
3.Egg
4.None of these
Cyanobacteria have
1.Gram +ve cell wall
2.Gram -ve cell wall
3.Both
4.None
Cyanobacteria reproduce by which of the following?
1.Binary fission
2.Multiple fission
3.Mitosis
4.meosis
E. coli and example of
1.Aerobic Bacteria
2.Anaerobic Bacteria
3.Facultative Bacteria
4.None
E. coli and example of entrobacteriace is important for causing diarrheal diseases its size is
1.0.1-600 um
2.100-200 nm
3.1.1-1.5 um (width) 2.0-6.0 um (length)
4.0.75-1.25 um
Example of bacteria requiring low concentration of oxygen is
1.Campylobactor
2.spirocheta
3.E-coli
4.Pseudomonas
Extremely long molecule of DNA that is tightly folded to fit inside the cell component is called
1.Chromosomes
2.Nucleus
3.Chromatin body
4.A and C
Flagella originate from
1.Cell membrane
2.Cell wall
3.Capsule
4.Basal body
Germ theory of disease has postulates
1.3
2.5
3.4
4.6
How many of the following species of bacteria cause diseases in humans?
1.50
2.100
3.150
4.200
In bacterial categories the bacteria smaller in number are
1.Gram-ive bacteria
2.Ancient bacteria
3.Eubacteria
4.Gram +ive bacteria
Locomotion of cyanobacteria is possible because of
1.Gas vesicles
2.Flagella
3.Cell Membrane
4.More than one option is correct
Nitrifying bacteria are the examples of
1.Hetrotrophic bacteria
2.Chemosynthetic bacteria
3.Parasitic bacteria
4.Saprophytic bacteria
Purple non-sulphur bacteria is an example of
1.Heterotrophic bacteria
2.Chemosynthetic bacteria
3.Saprotrophic bacteria
4.Photosynthetic bacteria
Rapid growth at exponential ration occurs in which of the following phase of bacterial growth?
1.Log phase
2.Lag phase
3.Death phase
4.stationary phase
Sex pili is formed in
1.Binary fission
2.multiple fission
3.Mitosis
4.None
Some bacteria ranging occasionally a size of 500 ?m in length are
1.Escherichia coli
2.Spirochetes
3.Epulopiscuim
4.Mycoplasma
The first bacterium isolated was
1.Coccus
2.Bacillus
3.Vibrio
4.Spirochete
The size of Spirochete is
1.0.1 -600 um
2.100-200 nm
3.0.75-1.25 um
4.500 um
The word Archaeobacteria (a division of bacteria) derived from Greek mean
1.True bacteria
2.False bacteria
3.Recent bacteria
4.Ancient bacteria
Those bacteria which are fully dependent upon their host for nutrition are called
1.Heterotrophic bacteria
2.Chemosynthetic bacteria
3.Saprophytic bacteria
4.Parasitic bacteria
Which of the following bacteria are thick rigid and spiral
1.Vibrio
2.Spirillum
3.Spirochete
4.Coccus
Which of the following bacteria do not have flagella commonly?
1.Cocci
2.Bacilli
3.Streptobacilli
4.Vibrio
Which of the following Chemical substances inhibit the growth of micro organism?
1.Antiseptic
2.Antibiotic
3.Anti Aging serum
4.A and B
Which of the following contains genes for drug and disease resistance in bacteria?
1.Plasmid
2.Necleotide
3.Mesosome
4.None
Which of the following has a chain arrangement?
1.Streptobacillus
2.Streptococci
3.Staphylococci
4.A and B
Which of the following is the waste material in bacteria ?
1.Lactic acid
2.Glycogen
3.Urea
4.Ammonia
Which of the following is the waste material in bacteria ?
1.Lactic acid
2.Glycogen
3.Urea
4.Ammonia
Which of the following statement is incorrect regarding germ theory of diseases postulated by Robert Koch?
1.A specific organism can always be found in association with a given
2.The organism can be isolated and grown in pure culture in the laboratories
3.It is possible to recover the organism in pure culture from the experimentally infected animals.
4.The pure culture cannot produce the disease when inoculated into susceptible animal however the causative organism isolated from pure culture can do so.
Which of the following structure is not present in all the bacteria?
1.Cell membrane
2.Chromatin bodies
3.Capsule
4.Ribosomes
Which of the following structure primarily helps in attachment of bacteria on various surfaces?
1.Flagella
2.Pili
3.Both of these
4.None of these
Which of the following structure provides greater pathogenicity to the bacteria?
1.Capsule
2.Slime
3.Cell Wall
4.Cell membrane
Who among the following Scientist developed the vaccine against anthrax?
1.Edward Jennar
2.Robert Brown
3.Louis Pasteur
4.A and B
Who coined the term Animalcules for microorganisms like Bacteria and protozoa?
1.Robert Koch
2.Louis Pasteur
3.Leeuwenhoek
4.Alexander Fleming
Who discovered the bacteria causing tuberculosis and also developed various techniques of media preparation and maintenance of pure culture?
1.Robert Koch
2.Louis Pasteur
3.Alexander Fleming
4.Leeuwenhoek