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AS Q02 I hour - a to prevent dehydration b protect from...

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CH357 Introduction to Microbiology Cadet ________________________ Quiz 02 30 points I hour Academic term 2008-1 (4) 1. Bacterial cell size is limited by a. the uptake of nutrients from the environment. b. the segregation of DNA into daughter cells. c. the amount of peptidoglycan in the cell envelope. (4) 2. Ether linkages can be found in the membrane lipids of a. Eubacteria b. Eukaryotes c. Archaea d. none of the above (4) 3. The energy for facilitated diffusion comes from a. the concentration gradient of the solute. b. the hydrolysis of ATP. c. the proton motive force. d. two D cells. (4) 4. The function of the capsule is
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Unformatted text preview: a. to prevent dehydration. b. protect from protozoan grazing. c. to attach the bacterium to a surface. d. all of the above. (4) 5. Organisms growing at 110 o C are called. a. Psychrophiles b. Mesophiles c. Thermophiles d. Hyperthermophiles (10) 6. Draw and label the cell envelope for gram positive bacteria. Extra credit (3 points) How are the strands of peptidoglycan linked in gram negative bacteria? Direct peptide bonds between the 3 rd and 4 th amino acids on two strands. Teichoic acid Cell wall Periplasm Plasma membrane...
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