1. Who discovered the importance of Agar in culture medium
a) Frau Hess
b) Louis Pasteur
c) Robert Koch
d) Francis Crick
Answer : a
2. The term Vaccine was coined by
a) Edward Jenner
b) Beijerinkii
c) Louis Pasteur
d) Joseph Lister
Answer : c
3. Which of the following statement is true for a harmful microorganisms
a) Mostly these are parasitic and multiply within the host
b) They cause infectious diseases and sometimes need a vector for transmission
c) They are called as pathogens
d) All of the above
Answer : d
4. The knowledge of microbiology is now used in the branch of ________ in which microorganisms are used for producing essential pharmaceuticals, such as human insulin, vaccines, novel medicines, Genetically Modified Foods.
a) Virology
b) Biotechnology
c) Aeronotics
d) All of the above
Answer : b
5. which of the following is not a prokaryotic.
a) Bacterium
b) Paramecium
c) Cyanobacteria
d) Chickenpox
Answer : d
6. Useful Microorganisms can help in the production of _____ .
a) growing agricultural produce and many food items
b) making medicines
c) keeping the environment clean
d) all of the above
Answer : d
7. Genetic engineering is the process of
a) using recombinant DNA to alter the genetic makeup of an organism
b) using recombinant RNA tp alter the genetic makeup of an organism
c) using recombinant proteins to alter the genetic makeup of an organism
d) using recombinant lipids to alter the genetic makeup of an organism
Answer : a
8. Usually in agriculture cross breeding is carried out to form new varieties of crops, and this process is ____
a) same as genetic engineering in agriculture
b) different from genetic engineering used in agriculture
c) both of the above
d) none of the above
Answer : b
9. The microorganisms used for genetically engineering crops for better crop production is
a) Agrobacterium coli
b) Mycobacterium tuberculosis
c) Salmonella typhi
d) Agrobacterium tumefaciencs
Answer : d
10. Lazaro Spallanzani disputed the theory of spontaneous generation by boiling the beef plus broth and keeping in an air tight sealed container in which
a) growth or presence of microorganisms were noted
b) Growth or presence of flies were noted
c) No growth of presence of any organisms were noted
d) all of the above happend
Answer : c
11. The event that became a milestone in development and establishment of microbiology as a science is the
a) Germ theory of disease
b) Development of Microscope
c) Discovery of Vaccines
d) Use of disinfectants
Answer : b
12. The main aim of using swam-necked flasks by Louis Pasteur designed to disprove spontaneous generation was to .
a) Trap the microbes and prevent them from reaching the broth
b) Allow the multiplication of microbes in the broth
c) Pasteurize the meat broth
d) None of the above
Answer : a
13. For scientist to work with their theories Microscope first became available in which year
a) 1400s
b) 1800s
c) 1600s
d) 1300s
Answer : c
14. Correct sequence for the true/false ( TF) related with the Koch's postulates can be?
1) There must be a causative agent present in the host suffering form a disease
2) Disease causing organism can be isolated in pure culture
3) If the sample of culture of disease causing organism is inoculated in a healthy host, it will produce the same disease
4) Disease causing organisms can be recovered from the inoculated host animal
a) TTFF
b) TFTF
c) FFTT
d) TTTT
Answer : d
15. Which of the following scientists supported the theory of spontaneous generations?
I. John Needham
II. Louis Pasteur
III. John Tyndall
IV. Felix Archimede Pouchet
a) I , IV
b) II , III
c) I , III
d) II , IV
Answer : a
16. Select the incorrect statement regarding bacteria
a) They've been revolving for 3.5 billion years
b) They are primitive cells with no nucleus of organelles bound in membranes
c) Their cell membrane is made up of polymer of NAG and NAM cross-linked with polypeptide chain
d) All of the above are correct
Answer : c
17. The archaebacteria that inhabit the stomach of ruminants are
a) Thermoacidophiles
b) Psychrophiles
c) Halophiles
d) Methanogens
Answer : d
18. Which of the following statement is true about actinomycetes?
a) They are gram-negative, obligate anaerobic bacteria
b) They are eukaryotic organisms
c) They are connecting link between bacteria and algae
d) None of the above
Answer : d
19. Cell wall of archaebacteria is made up of
a) Peptidoglycan
b) Cellulose
c) Pseudomurein
d) Chitin
Answer : c
20. Flagella is seen in
a) Bacteria
b) Protozoa
c) Eukaryotes
d) All of the above
Answer : d