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Porin proteins only allow relatively small molecules to penetrate and can be altered to block the entrance of harmful chemicals

Movement towards light using flagellum is called

Gram-negative bacteria are more difficult to kill than gram-positive bacteria

Cytoplasm of a bacterial cell is 70 – 80%  

Organisms that flourish at temperatures between 80° and 113°C and cannot grow below 50°C

Microorganisms can carry out photosynthesis

Very-long-chain fatty acid found in the cell walls of Mycobacterium and Nocardia  

Three general shapes of bacteria  

Oil must be cleaned off completely before returning the microscope to the cabinet.

Free-living microorganisms that feed primarily on organic matter from dead organisms.