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Worksheets4th session
Total questions: 72
Worksheet time: 36mins
The construction and use of the compound microscope is attributed to:
Antonie van Leeuwenhoek
Louis Pasteur
Robert Koch
Ferdinand Cohn
The techniques of sterilization were introduced by:
Louis Pasteur
Robert Koch
Ferdinand Cohn
John Needham
Bacillus of tuberculosis was discovered by:
Hansen
Loeffler
Robert Koch
Bruce
The term microbiology, as the study of living organisms of microscopic size, was coined by:
Antonie van Leeuwenhoek
Robert Koch
Louis Pasteur
Edward Jenner
The term vaccine was coined by:
Edward Jenner
Kitasato
Ehrlich
Louis Pasteur
Rabies vaccine was developed for the first time in 1885 by:
Louis Pasteur
Semple
Edward Jenner
Paul Ehrlich
Who discovered Mycobacterium tuberculosis and Vibrio cholerae?
Loeffler
Welch
Pfeiffer
Robert Koch
Who introduced the method of vaccination to prevent smallpox?
Louis Pasteur
Edward Jenner
Paul Ehrlich
John Hunter
Living organisms including bacteria and protozoa were first observed by:
Louis Pasteur
Robert Koch
Antonie van Leeuwenhoek
Christian Gram
Who is known as father of antiseptic surgery?
Alexander Fleming
Joseph Lister
Charles Nicolle
Christian Gram
Attenuated vaccine was first developed by:
Louis Pasteur
Robert Koch
Landsteiner
Ehrlich
The event that triggered the development and establishment of microbiology as a science is the:
Vaccinations
Spontaneous generation
Use of disinfectants
Development of the microscope
Which of the following is not a condition of Koch's postulates?
Isolate the causative agent of a disease
Cultivate the microbe in the laboratory
Inoculate a test animal to observe the disease
Produce a vaccine
Peptidoglycan is major constituent of cell wall of:
Gram-positive bacteria
Gram-negative bacteria
Fungi
Protozoa
Ultraviolet light is used in:
Fluorescence microscope
Dark ground microscope
Phase contrast microscope
Interference microscope
Cell wall-deficient forms of Gram-positive bacteria are called:
Spheroplasts
Trophozoites
Cysts
Protoplasts
Bacterial structure/s concerned with respiration is/are:
Mesosomes
Ribosomes
Mitochondria
Golgi apparatus
Which of the following bacterial structures is/are involved in attachment to cell surface?
Flagella
Fimbriae
Capsule
Mesosomes
Which of the following are eukaryotes?
Fungi
Bacteria
Chlamydiae
Mycoplasmas
What function does a condenser serve in light microscope?
Focuses the light onto our eyes.
Focuses the light rays on the sample.
Increases light intensity.
Reduces glare.
The best resolution that can be obtained with electron microscope is:
0.1-0.2 nm
0.3-0.5 nm
0.6-0.7 nm
0.8-0.9 nm
Generation time of Escherichia coli is:
20 seconds
20 minutes
14-15 hours
12-13 days
The period between inoculation of bacteria in a culture medium and beginning of multiplication is known as:
Lag phase
Log phase
Stationary phase
Decline phase
Bacteria whose optimum temperature for growth is 37ºC are known as:
Mesophiles
Psychrophiles
Thermophiles
Noctophiles
All bacteria that inhabit the human body are:
Autotrophs
Heterotrophs
Phototrophs
Chemolithotrophs
Chocolate agar is an example of which of the following?
Basal media
Selective media
Differential media
Enriched media
Destruction or inhibition of microorganisms in living tissues is known as:
Sterilization
Disinfection
Antisepsis
None of the above
Which of the following are referred to as 'jumping genes'?
Plasmids
Transposons
Bacteriophages
Operons
The first vaccine for human use produced using DNA technology was:
Polio vaccine
MMR vaccine
AIDS vaccine
Hepatitis B vaccine
Who is the father of genetics?
Gregor Mendel
Griffith
Hargobind Khurana
Jacob
Which of the following infections is acquired from animals?
Plague
Diphtheria
Meningococcal meningitis
Poliomyelitis
Which of the following infections is not spread by the respiratory route?
Common cold
Measles
Mumps
Hepatitis B
Large number of bacteria forming normal flora are found:
In the mouth
On the skin
In the large intestine
In the nose
Phagocytes are potent non-specific host defences. Which of the following are the major phagocytic cells in the body?
B lymphocytes
T lymphocytes
Neutrophils
Basophils
Phylogenetically, the oldest immunoglobulin class is:
IgA
IgM
IgG
IgE
B cells that produce and release large amounts of antibody are called:
Memory cells
Killer cells
Basophils
Plasma cells
Most widely accepted theory of antibody production is:
Direct template theory
Indirect template theory
Side chain theory
Clonal selection theory
A transplant between individuals of different animal species is known as:
Xenograft
Isograft
Homograft
Allograft
The most important cause of bacterial sore throat is:
Streptococcus pyogenes
Staphylococcus aureus
Haemophilus spp.
Mycoplasma pneumoniae
Which of the following is optimal specimen to be collected for the diagnosis of gonorrhoea by culture in males?
Urine
Urethral swab
Rectal swab
Pharyngeal swab
Which of the following bacteria are predominant flora of the human gut?
Escherichia coli
Anaerobic bacteria
Enterococcus faecalis
Actinomyces
Which of the following is the most common zoonotic infection in the world?
Rat bite fever
Anthrax
Leptospirosis
Plague
Plague or the black death is transmitted by:
Sandflies
Rat fleas
Mites
Ticks
Which of the following is RNA virus?
Papilloma virus
Influenza virus
Hepatitis B virus
Epstein-Barr virus
Which of the following is DNA virus?
Polio virus
Rubella virus
Vaccinia virus
Human immunodeficiency virus
A chemical component that is found in all viruses is
Protein
RNA
DNA
Lipid
Viruses range in size from:
1 to 100 nm
10 to 300 nm
300 to 500 nm
500 to 750 nm
Which is the commonest mode of transmission of HIV?
Sexual
Parenteral
Perinatal
Oral
Following are the examples of re-emerging infections, except:
Malaria
Plague
AIDS
Typhoid fever
Genital discharge is present in:
Chancroid
Gonorrhoea
Herpes genitalis
Lymphogranuloma venereum
Unicellular parasites belong to kingdom:
Monera
Protozoa
Plantae
Animalia
Helminths belong to kingdom:
Monera
Protozoa
Plantae
Animalia
A parasite that must spend at least part of its life cycle on or in a host is called:
Facultative parasite
Hyperparasite
Obligate parasite
Pathogenic parasite
Phylum Sporozoa contains
Malaria parasites
Ciliates
Flagellates
Amoebae
Most common organ involved in extraintestinal amoebiasis is:
Liver
Lung
Brain
Spleen
Reservoir host of Entamoeba histolytica is:
Man
Pig
Dog
Sheep
Who first found and described malaria parasite?
Charles Laveran
Ronald Ross
Robert Koch
Carlos Chagas
The parasitic helminths that are most likely to be found in bile ducts, lungs and blood are the:
Tapeworms
Roundworms
Flatworms
Flukes
Which of the following is true of the microbial world?
All microbes are harmful.
Humans could survive without microbes.
Many microbes are helpful
Most microbes are pathogenic
To reduce the risk of open flame from Bunsen burners, microbiologists are increasingly using which of the following devices for easy, rapid benchtop sterilization of small pieces of equipment?
autoclaves
ethylene oxide
incubators
microincinerators
Ernst Haeckel proposed a classification system consisting of which of the following subgroups?
five kingdoms
Three kingdoms
two domains and three kingdoms
two domains and five kingdoms
Viruses not included in phylogenetic trees for which of the following reasons?
It is too difficult to observe their characteristics.
They are acellular and nonliving.
They do not have any genes, which prevents genetic analysis.
They lack a nucleus.
For taxonomic classification of microbes, serological tests typically are used to do which of the following?
determine complete genome sequences for microbes
identify proteins on the basis of their reaction with specific antibodies
run analyses to identify whether particular genes are present
visualize microbial external morphology
Which of the following indicates how bacteria and viruses typically compare in size?
Bacteria are indistinguishable from viruses.
Bacteria are much larger than viruses
Bacteria are much smaller than viruses.
Bacteria are similar in size to viruses.
Chitin cell walls are characteristic of which taxonomic group?
algae
archaea
bacteria
fungi
The cell walls of archaeans often contain which of the following substances?
cellulose
chitin
peptidoglycan
pseudopeptidoglycan
Mycotoxins are produced by which type of organism?
archaeans
heterotrophic protists
Molds
protozoans
Which of the following is true of the genetics of viruses?
Viruses always contain DNA and force host cells to produce RNA.
Viruses always contain DNA and RNA.
Viruses always contain RNA and force host cells to produce DNA.
Viruses can contain either DNA or RNA, but not both.
Which microorganisms are used to make microbiological growth media?
bacteria
fungi
algae
protozoa
Of the following scientists, who first promulgated the theory of abiogenesis?
Aristotle
Pasteur
Needham
Spallanzani
A nanometer is______than a micrometer
10 times larger
10 times smaller
1000 times larger
1000 times smaller
Which recombinant DNA technique is used to replicate copies of a DNA molecule?
PCR
gel electrophoresis
electroporation
reverse transcription
