MCB 2010 EVALUATION 2026 QUESTIONS AND
ANSWERS SURE A+
✔✔cell walls in fungi, algae, and protozoa are made of different polysaccharides than
bacteria - ✔✔true
✔✔endospore - ✔✔Unique structures produced by some bacteria
Defensive strategy against unfavorable conditions
resistant to extreme temperatures
✔✔Microbial growth - ✔✔Increase in a population of microbes
✔✔colony - ✔✔an aggregation of cells arising from single parent cell
✔✔Autotrophs - ✔✔use an inorganic source of carbon
✔✔Heterotrophs - ✔✔catabolize reduced organic molecules
✔✔Chemotrophs - ✔✔acquire energy from redox reactions involving inorganic and
organic chemicals
✔✔Phototrophs - ✔✔use light as their energy source
✔✔obligate anaerobes - ✔✔oxygen is deadly
✔✔obligate aerobes - ✔✔oxygen is necessary
✔✔Aerobes - ✔✔undergo aerobic respiration
✔✔Anaerobes - ✔✔do not use aerobic metabolism
, ✔✔Facultative anaerobes - ✔✔can maintain life via fermentation or anaerobic
respiration or by aerobic respiration
✔✔Aerotolerant anaerobes - ✔✔do not use aerobic metabolism but have some
enzymes that detoxify oxygen's poisonous forms
✔✔Microaerophiles - ✔✔aerobes that require oxygen levels from 2 to 10% and have a
limited ability to detoxify hydrogen peroxide and superoxide radicals
✔✔Categories of Microbes - ✔✔
✔✔Neutrophiles - ✔✔grow best in a narrow range around
neutral pH
✔✔Acidophiles - ✔✔grow best in acidic habitats
✔✔Alkalinophiles - ✔✔live in alkaline soils and water
✔✔Two physical effects of water - ✔✔osmotic pressure and hydrostatic pressure
✔✔Hypotonic - ✔✔solutions have lower solute concentrations
✔✔Hypertonic - ✔✔solutions have greater solute concentrations
✔✔halophiles - ✔✔Obligate and facultative
✔✔Barophiles - ✔✔live under extreme pressure
✔✔Antagonistic relationships - ✔✔microbe harms other organism
✔✔Synergistic relationships - ✔✔bacteria gets benefits from other with no harm
✔✔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
ANSWERS SURE A+
✔✔cell walls in fungi, algae, and protozoa are made of different polysaccharides than
bacteria - ✔✔true
✔✔endospore - ✔✔Unique structures produced by some bacteria
Defensive strategy against unfavorable conditions
resistant to extreme temperatures
✔✔Microbial growth - ✔✔Increase in a population of microbes
✔✔colony - ✔✔an aggregation of cells arising from single parent cell
✔✔Autotrophs - ✔✔use an inorganic source of carbon
✔✔Heterotrophs - ✔✔catabolize reduced organic molecules
✔✔Chemotrophs - ✔✔acquire energy from redox reactions involving inorganic and
organic chemicals
✔✔Phototrophs - ✔✔use light as their energy source
✔✔obligate anaerobes - ✔✔oxygen is deadly
✔✔obligate aerobes - ✔✔oxygen is necessary
✔✔Aerobes - ✔✔undergo aerobic respiration
✔✔Anaerobes - ✔✔do not use aerobic metabolism
, ✔✔Facultative anaerobes - ✔✔can maintain life via fermentation or anaerobic
respiration or by aerobic respiration
✔✔Aerotolerant anaerobes - ✔✔do not use aerobic metabolism but have some
enzymes that detoxify oxygen's poisonous forms
✔✔Microaerophiles - ✔✔aerobes that require oxygen levels from 2 to 10% and have a
limited ability to detoxify hydrogen peroxide and superoxide radicals
✔✔Categories of Microbes - ✔✔
✔✔Neutrophiles - ✔✔grow best in a narrow range around
neutral pH
✔✔Acidophiles - ✔✔grow best in acidic habitats
✔✔Alkalinophiles - ✔✔live in alkaline soils and water
✔✔Two physical effects of water - ✔✔osmotic pressure and hydrostatic pressure
✔✔Hypotonic - ✔✔solutions have lower solute concentrations
✔✔Hypertonic - ✔✔solutions have greater solute concentrations
✔✔halophiles - ✔✔Obligate and facultative
✔✔Barophiles - ✔✔live under extreme pressure
✔✔Antagonistic relationships - ✔✔microbe harms other organism
✔✔Synergistic relationships - ✔✔bacteria gets benefits from other with no harm
✔✔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
