Main structural difference between prokaryotes and eukaryotes is

Mycology is the branch of microbiology which studies: (Points : 2)

Bacteria        Protozoa        Fungi        Viruses

Question 2. 2. Main structural difference between prokaryotes and eukaryotes is: (Points : 2)

Absence of cell wall in prokaryotes        Absence of nucleus in prokaryotes        Absence of nucleic acid in prokaryotes        Absence of flagella in prokaryotes

Question 3. 3. Under the microscope with Gram stain if you observe purple colored round organisms in chains they will be called: (Points : 2)

Streptococci        Staphyloccoci        Gram negative bacilli        Spirochetes

Question 4. 4. Parasite is an organism (Points : 2)

that causes a disease        which harbors another organism        too small to be seen by naked eye        which require another organism in order to survive

Question 5. 5. The disease causing “agent” composed only of a protein is called: (Points : 2)

Virus        Viroid        Prion        Proteinome

Question 6. 6. The unicellular parasites which infect humans are called: (Points : 2)

Prokaryotes        Protozoa        Platyhelminths        Nemathelminths

Question 7. 7. Louise Pasteur developed vaccines for (Points : 2)

Cholera, Small pox        Polio, tetanus        Influenza & Hepatitis        Anthrax & Rabies

Question 8. 8. Molecular postulates are used to determine whether a given bacterium causes the disease?   (Points : 2)

True        False

Question 9. 9. What are Koch’s postulates used for? (Points : 2)

Directly relating a specific microbe to a specific disease        Identifying an unknown from a mixed culture of bacteria        Differentiating between Gram-negative and Gram-positive bacteria        All of the above

Question 10. 10. Robert Koch isolated which of the following organisms for the first time? (Points : 2)

Staphylococcus        organism causing silkworm disease        Anthrax bacillus        Influenza virus

Question 11. 11. Louise Pasteur disproved the theory of spontaneous generation.   (Points : 2)

True        False

Question 12. 12. Microbiology has lost the significance in the US as our main health issues are non microbial diseases.   (Points : 2)

True        False

Question 13. 13. Which of the following statement is true for Archaea? (Points : 2)

They contain peptidoglycan in their cell wall        They are eukaryotes living in extreme environments        They are prokaryotes living in extreme environments        They consist of major human pathogens

Question 14. 14. Which of the following is an important function of bacterial capsule? (Points : 2)

to protect against the phagocytes        house the enzymes required for bacterial metabolism        give rigidity to the cell        To control flow of nutrients into the cell.

Question 15. 15. Main locomotor organ of a bacterium is (Points : 2)

Pilus        Fimbria        Flagellum        Protoplasm

Question 16. 16. Which of the following structures are used by bacteria to adhere (stick to) the surfaces? (Points : 2)

Cell membrane        Golgi apparatus        Pili        Flagella

Question 17. 17. What is the predominant component in a gram positive organism’s cell wall? (Points : 2)

Techoic acid        Lipoproteins        Lipopolysaccharide        Peptidoglycan

Question 18. 18. Which of the forms will be produced by some bacterial species under adverse conditions? (Points : 2)

Reproductive form        Protoplast        Endospore        Cysts

Question 19. 19. Rickettsia  and Chlamydia are called obligate intracellular “parasites” because: (Points : 2)

They are viruses        They lack cell wall        They are eukaryotes        They cannot survive and multiply outside a host cell

Question 20. 20. Which of the following is the site for energy or ATP generation in bacteria? (Points : 2)

Nucleus        Cell membrane        Plasmids        Cytoplasm

Question 21. 21. Electron microscope is used in microbiology for visualizing (Points : 2)

Parasites        Viruses        Bacteria        Fungi

Question 22. 22. The Gram stain technique is valuable in distinguishing : (Points : 2)

types of fungi        the size and structure of viruses        the nucleus of bacteria from other cellular organelles        types of bacteria

Question 23. 23. The binomial system of nomenclature for microorganisms uses the (Points : 2)

genus and species epithet        order and species epithet        kingdom and genus names        family and order names

Question 24. 24. Match the following nutritional type with its energy and carbon source: (Points :8: 2 points each) (Points : 8)
Potential Matches:
1 : Photoheterotroph
2 : Chemoautotroph
3 : Photoautotroph
4 : Chemoheterotroph