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Biology 1525 MCQs [All-Courses]

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Biology covers key concepts of life, organisms, and human systems with exam-focused notes for PPSC, FPSC, KPPSC, BPSC.,NTS, OTS, AJKPSC. Clear, concise topics help students prepare effectively for competitive tests.

All Topics  1525

Which of the following bacteria are thick rigid and spiral______________?
A Vibrio
B Spirillum
C Spirochete
D Coccus
Correct Answer: Spirillum
The first bacterium isolated was_________________?
A Coccus
B Bacillus
C Vibrio
D Spirochete
Correct Answer: Bacillus
Coccobacillus has a shape similar to________________?
A Diplobacillus
B Sarcina
C Egg
D None of these
Correct Answer: Egg
Some bacteria ranging occasionally a size of 500 ?m in length are___________________?
A Escherichia coli
B Spirochetes
C Mycoplasma
D Epulopiscuim
Correct Answer: Spirochetes
Germ theory of disease has________________postulates?
A 3
B 5
C 4
D 6
Correct Answer: 4
In bacterial categories the bacteria smaller in number are_______________?
A Gram-ive bacteria
B Eubacteria
C Ancient bacteria
D Gram +ive bacteria
Correct Answer: Ancient bacteria
E. coli and example of entrobacteriace is important for causing diarrheal diseases its size is____________?
A 0.1-600 um
B 100-200 nm
C 1.1-1.5 um (width) 2.0-6.0 um (length)
D 0.75-1.25 um
Correct Answer: 1.1-1.5 um (width) 2.0-6.0 um (length)
The size of Spirochete is_____________?
A 0.1 -600 um
B 100-200 nm
C 500 um
D 0.75-1.25 um
Correct Answer: 500 um
Which of the following structure is not present in all the bacteria_____________?
A Cell membrane
B Chromatin bodies
C Ribosomes
D Capsule
Correct Answer: Capsule
Which of the following statement is incorrect regarding germ theory of diseases postulated by Robert Koch_____________?
A A specific organism can always be found in association with a given disease
B The organism can be isolated and grown in pure culture in the laboratories
C The pure culture cannot produce the disease when inoculated into susceptible animal however the causative organism isolated from pure culture can do so.
D It is possible to recover the organism in pure culture from the experimentally infected animals
Correct Answer: The pure culture cannot produce the disease when inoculated into susceptible animal however the causative organism isolated from pure culture can do so.
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