Rapid growth at exponential ration occurs in which phase of bacterial growth:
Rapid growth at exponential ration occurs in which phase of bacterial growth:
A. Lag phase
B. Log phase
C. Stationary phase
D. Death / decline phase
Biology Mcqs
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Chemical substances used on living tissues that inhibit the growth of micro organism are called___________?
Chemical substances used on living tissues that inhibit the growth of micro organism are called___________?
A. Antiseptics
B. Disinfectants
C. Antibiotics
D. Vaccines -
Who developed the vaccine against anthrax?
Who developed the vaccine against anthrax?
A. Louis Pasteur
B. Edward Jennar
C. Leuvenhoek
D. Alexander Fleming -
Cyanobacteria have ________ cell wall?
Cyanobacteria have ________ cell wall?
A. Gram +ve.
B. Gram – ve.
C. Acid fast
D. Cellulose rich -
Which of the following help cyanobacteria to locomote?
Which of the following help cyanobacteria to locomote?
A. Flagella
B. Gas vesicles
C. Both of these
D. None of these -
Cyanobacteria reproduce by____________?
Cyanobacteria reproduce by____________?
A. Binary fission
B. Mitosis
C. Meiosis
D. Conjugation -
Approximately _____ species of bacteria are known to cause diseases in humans.
Approximately _____ species of bacteria are known to cause diseases in humans.
A. 100
B. 200
C. 300
D. 400 -
A group of 8 cocci is called______________?
A group of 8 cocci is called______________?
A. Diplococci
B. Octococci
C. Tetrad
D. Sarcina -
Which of the following bacteria are thick rigid and spiral______________?
Which of the following bacteria are thick rigid and spiral______________?
A. Vibrio
B. Spirillum
C. Spirochete
D. Coccus -
The first bacterium isolated was_________________?
The first bacterium isolated was_________________?
A. Coccus
B. Bacillus
C. Vibrio
D. Spirochete