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
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