MCB 2010 Test 1 (IRSC) Exam Questions with Complete Solutions 100% Solved| Grade A+
Symbiotic relationships bacteria have such a close relationship with other they don't live
without them; both benefit
Refrigeration Stores for short periods of time
Deep-freezing Stores for years
Lyophilization Stores for decades
Generation Time Time required for a bacterial cell to grow and divide
lag phase
log phase
stationary phase
death phase
Flagella responsible for movement
Composed of filament, hook, and basal body
Fimbriae Used by bacteria to adhere to one another and to substances in environment
Pili Bacteria typically have only one or two per cell.
Transfer DNA from one cell to another (conjugation)
, Cytoplasmic Membrane phospholipid bilayer
Composed of lipids and associated proteins
Energy storage
endospore formation
Glycocalyes are different in prokaryotes and eukaryotes true
metric measurements meter- decimeter- centimeter- millimeter- micrometer- nanometer
simple bright field microscopes contains one magnifying lense
compound bright field microscopes Series of lenses for magnification
Light passes through specimen into objective lens
Oil immersion lens increases resolution
Have one or two ocular lenses
Total magnification = magnification of objective lens × magnification of ocular lens
Most have condenser lens (direct light through specimen)
Dark-Field Microscopes Best for observing pale objects and external features
Only light rays scattered by specimen enter objective lens
Specimen appears light against dark background
Increases contrast and enables observation of more details
Useful for examining small or colorless cells
Symbiotic relationships bacteria have such a close relationship with other they don't live
without them; both benefit
Refrigeration Stores for short periods of time
Deep-freezing Stores for years
Lyophilization Stores for decades
Generation Time Time required for a bacterial cell to grow and divide
lag phase
log phase
stationary phase
death phase
Flagella responsible for movement
Composed of filament, hook, and basal body
Fimbriae Used by bacteria to adhere to one another and to substances in environment
Pili Bacteria typically have only one or two per cell.
Transfer DNA from one cell to another (conjugation)
, Cytoplasmic Membrane phospholipid bilayer
Composed of lipids and associated proteins
Energy storage
endospore formation
Glycocalyes are different in prokaryotes and eukaryotes true
metric measurements meter- decimeter- centimeter- millimeter- micrometer- nanometer
simple bright field microscopes contains one magnifying lense
compound bright field microscopes Series of lenses for magnification
Light passes through specimen into objective lens
Oil immersion lens increases resolution
Have one or two ocular lenses
Total magnification = magnification of objective lens × magnification of ocular lens
Most have condenser lens (direct light through specimen)
Dark-Field Microscopes Best for observing pale objects and external features
Only light rays scattered by specimen enter objective lens
Specimen appears light against dark background
Increases contrast and enables observation of more details
Useful for examining small or colorless cells
