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KING ABDUL AZIZ UNIVERSITY FACULTY OF SCIENCE Department of Biology Course Title & Code: GENERAL MICROBIOLOGY (BIO 231) Student's Name: …………………………………………………………… UID: …………………… Date …………………. Duration: …………….. First Periodical exam (15 marks) 1.1 Find exact match for text in column A with column B ( 10 marks) Column A Column B ----- Archaea 1. Blood clotting ----- Spirillum 2. Cell wall made of chitin ----- Germ 3. A glycocalyx in a biofilm ----- Vitamin B 4. Regulate the movement of cations ----- Bacteria 5. Unicellular, complex cell structure lacking a cell wall ----- Outer membrane 6. Atypical Cell Walls ----- Salvarsan 7. A rapidly growing cell ----- Protozoa 8. Prokaryote without peptidoglycan cell wall ----- Viruses 9. Metabolism ----- Vaccine 10. Compound microscope ----- Vibrios 11. Cell wall made of peptidoglycan ----- Teichoic acids 12. Protection from disease ----- Helminths 13. Like a corkscrew ----- EPS 14. Not composed of cells ----- Vitamin K 15. Multicellular animals ----- Mycoplasma sp. 16. An important factor in evading phagocytosis ----- Algae 17. Prepared from living or killed pathogens. ----- Viruses 18. Magic Bullet ----- Little boxes 19. Cell wall made of cellulose; photosynthetic ----- Fungi 20. Look like curved rods. Dr. Mona Dr. Nedal 1.2 True/False Questions ( 5 marks) 1- In peptidoglycan, the adjacent rows linked by Tetrapeptide side chains, which consist of five amino acids attached to NAMs in the backbone ( ). ----------------------------------------------------------------------------------------------------2- Lysozyme is digestive enzyme that occurs naturally in tears and saliva ( ). --------------------------------------------------------------------------------------------------3- Lipid A is the lipid portion of the LPS which functions as an antigen ( ). ----------------------------------------------------------------------------------------------------4- The return of an endospore to its vegetative state is called germination ( ). ----------------------------------------------------------------------------------------------------5- L cells form can live and divide or return to the walled state ( ). ----------------------------------------------------------------------------------------------------6- Prokaryotic plasma membranes are rigid because they have sterols ( ). ----------------------------------------------------------------------------------------------------7- Plasma membranes have selective permeability which indicates that all molecules and ions can pass through the membrane ( ). ----------------------------------------------------------------------------------------------------8- Penicillin can effects at cell membrance ( ). ----------------------------------------------------------------------------------------------------9- In active processes, the cell must use energy (ATP) to move substances ( ) ----------------------------------------------------------------------------------------------------10- The cytoplasm of a prokaryote contains numerous 70S ribosomes ( ) Best wishes Dr. Mona Dr. Nedal KING ABDUL AZIZ UNIVERSITY FACULTY OF SCIENCE Department of Biology Course Title & Code: GENERAL MICROBIOLOGY (BIO 231) Student's Name: …………………………………………………………… UID: …………………… Date …………………. Duration: …………….. First Periodical exam (15 marks) MODEL ANSWER 1.2 Find exact match for text in column A with column B ( 10 marks) Column A --8- Archaea --13- Spirillum Column B 1. Blood clotting 2. Cell wall made of chitin -7-- Germ 3. A glycocalyx in a biofilm -9-- Vitamin B 4. Regulate the movement of cations --11-- Bacteria 5. Unicellular, complex cell structure lacking a cell wall --16-- Outer membrane 6. Atypical Cell Walls -18--- Salvarsan 7. A rapidly growing cell --5-- Protozoa ---14- Viruses 8. Prokaryote without peptidoglycan cell wall 9. Metabolism --17- Vaccine 10. Compound microscope -20-- Vibrios 11. Cell wall made of peptidoglycan --8- Teichoic acids ---15- Helminths --3-- EPS --1- Vitamin K 12. Protection from disease 13. Like a corkscrew 14. Not composed of cells 15. Multicellular animals --6-- Mycoplasma sp. 16. An important factor in evading phagocytosis --19- Algae 17. Prepared from living or killed pathogens. --14- Viruses 18. Magic Bullet -10-- Little boxes 19. Cell wall made of cellulose; photosynthetic --2-- Fungi 20. Look like curved rods. Dr. Mona Dr. Nedal 1.2 True/False Questions ( 5 marks) 11- In peptidoglycan, the adjacent rows linked by Tetrapeptide side chains, which consist of five amino acids attached to NAMs in the backbone ( F ). ----------------------------------------------------------------------------------------------------12- Lysozyme is digestive enzyme that occurs naturally in tears and saliva ( T ). --------------------------------------------------------------------------------------------------13- Lipid A is the lipid portion of the LPS which functions as an antigen ( F ). ----------------------------------------------------------------------------------------------------14- The return of an endospore to its vegetative state is called germination ( T ). ----------------------------------------------------------------------------------------------------15- L cells form can live and divide or return to the walled state ( T ). ----------------------------------------------------------------------------------------------------16- Prokaryotic plasma membranes are rigid because they have sterols ( F ). ----------------------------------------------------------------------------------------------------17- Plasma membranes have selective permeability which indicates that all molecules and ions can pass through the membrane ( F ). ----------------------------------------------------------------------------------------------------18- Penicillin can effects at cell membrance ( F ). ----------------------------------------------------------------------------------------------------19- In active processes, the cell must use energy (ATP) to move substances ( T ) ----------------------------------------------------------------------------------------------------20- The cytoplasm of a prokaryote contains numerous 70S ribosomes ( T ) Best wishes Dr. Mona Dr. Nedal