741. Coccobacillus has a shape similar to________________?
A. Diplobacillus
B. Sarcina
C. Egg
D. None of these
742. The first bacterium isolated was_________________?
A. Coccus
B. Bacillus
C. Vibrio
D. Spirochete
743. Which of the following bacteria are thick rigid and spiral______________?
A. Vibrio
B. Spirillum
C. Spirochete
D. Coccus
744. A group of 8 cocci is called______________?
A. Diplococci
B. Octococci
C. Tetrad
D. Sarcina
745. Approximately _____ species of bacteria are known to cause diseases in humans.
A. 100
B. 200
C. 300
D. 400
746. Cyanobacteria reproduce by____________?
A. Binary fission
B. Mitosis
C. Meiosis
D. Conjugation
747. Which of the following help cyanobacteria to locomote?
A. Flagella
B. Gas vesicles
C. Both of these
D. None of these
748. Cyanobacteria have ________ cell wall?
A. Gram +ve.
B. Gram – ve.
C. Acid fast
D. Cellulose rich
749. Who developed the vaccine against anthrax?
A. Louis Pasteur
B. Edward Jennar
C. Leuvenhoek
D. Alexander Fleming
750. Chemical substances used on living tissues that inhibit the growth of micro organism are called___________?
A. Antiseptics
B. Disinfectants
C. Antibiotics
D. Vaccines