PCR 4

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10/1/2015 PCR 4: MICR-134-01 GENERAL MICROBIOLOGY (Sung 15FA) https://puc.instructure.com/courses/1658154/quizzes/2929299 1/7 Attempt History Attempt Time Score Regraded LATEST Attempt 1 72 minutes 59 out of 60 59 out of 60 This quiz has been regraded; your score was not affected. PCR 4 Due Oct 2 at 6pm Points 60 Questions 17 Available until Oct 2 at 6pm Time Limit None Correct answers will be available on Oct 3 at 9pm. Score for this quiz: 59 out of 60 Submitted Oct 1 at 9:29pm This attempt took 72 minutes.   5 / 5 pts Question 1 Match in functional groups A diplobacillus B streptobacillus C diplococcus D staphylococcus E streptococcus

10/1/2015 PCR 4: MICR-134-01 GENERAL MICROBIOLOGY (Sung 15FA) https://puc.instructure.com/courses/1658154/quizzes/2929299 2/7 Original Score: 1 / 1 pts Regraded Score: 1 / 1 pts Question 2 This question has been regraded. Pili has the following functions ___. Choose a correct one.  adhering to surfaces by adhesins being a virulence factor transferring genetic material between cells providing motility all of the above 3 / 3 pts Question 3 Match in pili attachment pili attach bacterial cells to environ conjugation pili transfer genetic materials betw type IV pili cause twitching and gliding mo 4 / 4 pts Question 4 Match the structure with correct name. a filament b hook c basal body d

10/1/2015 PCR 4: MICR-134-01 GENERAL MICROBIOLOGY (Sung 15FA) https://puc.instructure.com/courses/1658154/quizzes/2929299 3/7 H+ 1 / 1 pts Question 5 Spirochetes can be motile by _________ that lies in an area called the periplasm. Write a correct answer. endoflagella 7 / 7 pts Question 6 Match in glycocalyx protect cells from desiccation capsule and slime layer stick to surfaces capsule and slime layer represents another virulence factor capsule and slime layer exists in Streptococcus pneumoniae and Bacillus anthracis capsule composed of dextran slime layer is seen in Streptococcus mutans slime layer enable bacteria to evade phagocytosis, an immune reaction capsule 4 / 4 pts Question 7 Match the structure with a correct name. A N-acetylmuramic acid

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10/1/2015 PCR 4: MICR-134-01 GENERAL MICROBIOLOGY (Sung 15FA) https://puc.instructure.com/courses/1658154/quizzes/2929299 4/7 B N-acetylglucosamine acid C amino acid side chain D peptide cross-bridge 5 / 5 pts Question 8 Name the indicated structure. A phospholipids B protein C teichoic acid D cell wall E cell membrane 0 / 1 pts Question 9 Incorrect Choose a WRONG statement on teichoic acid. it is a virulence factor that triggers fever and inflammation it is made of sugaralcohol and phosphate polymer it controls autolytic enzyme it protects cell enveloped by establishing surface charge on the cell wall

10/1/2015 PCR 4: MICR-134-01 GENERAL MICROBIOLOGY (Sung 15FA) https://puc.instructure.com/courses/1658154/quizzes/2929299 5/7 it is a backbone of peptidoglycan 4 / 4 pts Question 10 Match mycolic acid Mycobacteria pseudopeptidoglycan Archaeae lipopolysaccharide endotoxin in Gram negative ce teichoic acid Gram positive cell 6 / 6 pts Question 11 Match the structures with correct names. A lipoprotein B porins C outer membrane D peptidoglycan E periplasm F lipopolysaccharides

10/1/2015 PCR 4: MICR-134-01 GENERAL MICROBIOLOGY (Sung 15FA) https://puc.instructure.com/courses/1658154/quizzes/2929299 6/7 1 / 1 pts Question 12 Choose a WRONG statement on Gram negative bacteria. The inner half of the outer membrane of the cell resembles the cell membrane The outer half of the outer membrane contains lipopolysaccharide, which is made of lipid A and polysaccharide porin carries selectively hydrophobic molecules periplasm contains digestive enzymes and transport protein e. all of the above 1 / 1 pts Question 13 Choose a CORRECT statement on functions of cell membrane proteins. cell wall synthesis energy metabolism anchor DNA to membrane protein sensation of stimuli transport of molecules all of the above 4 / 4 pts Question 14 Match in cell membrane. active transport pumps that delivers particles a passive transport diffusion that spread particles polymyxin make holes in the bilayer alcohol, detergents dissolve the bilayer of bacteria 3 / 3 pts Question 15 Match in bacterial cellular organelles nucleoid

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10/1/2015 PCR 4: MICR-134-01 GENERAL MICROBIOLOGY (Sung 15FA) https://puc.instructure.com/courses/1658154/quizzes/2929299 7/7 site of essential genes, chromo plasmid small circular extra-chromosom ribosome protein synthesis 5 / 5 pts Question 16 Match in microcompartments and inclusion bodies that serve functions other than simply storing substances microcompartment that store nutrients or building blocks for cellular structures inclusion body exampled by carboxysome that fix carbon dioxide to produce carbohydrates microcompartment store polysaccharides, sulfur, or lipid inclusion body store gas, or magnet irons inclusion body 5 / 5 pts Question 17 Match in bacterial cytoskeletons. responsible for cell’s curved shape intermdediate filaments homol essential in cell division tubulin homolog involved in cell wall formation actin (microfilament) homolog exampled by crescentin intermdediate filaments homol involved in chromosome segregation actin (microfilament) homolog Quiz Score: 59 out of 60

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