BIO 242 EXAM 2 (CHAMBERLAIN
UNIVERSITY) QUESTIONS AND
ANSWERS GRADED A+ 2025/2026
Chemotrophs - ANS Obtains energy from chemicals
Organic (organ)
Inorganic (Litho)
Phototrophs - ANS Obtains energy from sunlight or photosynthesis
Hetertrophs - ANS Obtain Carbon from organic molecules (proteins, nucleic acid, carbs &
lipids)
Autotroph - ANS Obtain carbon from inorganic molecules (CO2)
Chemoheterotroph - ANS An organism that gets their energy from chemicals and their
carbon from organic molecules.
Photoautotrophs - ANS photosynthetic organisms, such as algae, plants and most
cyanobacteria.
Photoheterotrophs - ANS An organism that obtains energy from sunlight and carbon from
organic sources.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Chemoautotrophs - ANS organic compounds ?
Saprobes - ANS Obtains nutrients from dead organisms.
Parasites - ANS Obtain nutrients from living organisms and cause harm to their host.
what several environmental factors are influenced on microbial growth ? - ANS - Temperature
- Gases (primarily oxygen)
- pH
- Osmotic pressure (involves hypertonic & hypotonic)
- Hydrostatic pressure (Involves Atmospheric pressure)
Psychrophiles - ANS - cold-loving microbes (0-15 degrees celsius)
Psychrotolerant - ANS Organisms that tolerate the cold, but grow slowly (15-30 degrees
celsius)
Mesophiles - ANS
Thermophiles - ANS heat loving microbes (50-60 C)
Extreme thermophiles - ANS thrive in very hot environments (above 125 C)
Obligate aerobes require - ANS oxygen and can NOT survive without it.
facultative anaerobes - ANS DOES NOT need oxygen but can tolerate it and grow in its
presence
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
UNIVERSITY) QUESTIONS AND
ANSWERS GRADED A+ 2025/2026
Chemotrophs - ANS Obtains energy from chemicals
Organic (organ)
Inorganic (Litho)
Phototrophs - ANS Obtains energy from sunlight or photosynthesis
Hetertrophs - ANS Obtain Carbon from organic molecules (proteins, nucleic acid, carbs &
lipids)
Autotroph - ANS Obtain carbon from inorganic molecules (CO2)
Chemoheterotroph - ANS An organism that gets their energy from chemicals and their
carbon from organic molecules.
Photoautotrophs - ANS photosynthetic organisms, such as algae, plants and most
cyanobacteria.
Photoheterotrophs - ANS An organism that obtains energy from sunlight and carbon from
organic sources.
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Chemoautotrophs - ANS organic compounds ?
Saprobes - ANS Obtains nutrients from dead organisms.
Parasites - ANS Obtain nutrients from living organisms and cause harm to their host.
what several environmental factors are influenced on microbial growth ? - ANS - Temperature
- Gases (primarily oxygen)
- pH
- Osmotic pressure (involves hypertonic & hypotonic)
- Hydrostatic pressure (Involves Atmospheric pressure)
Psychrophiles - ANS - cold-loving microbes (0-15 degrees celsius)
Psychrotolerant - ANS Organisms that tolerate the cold, but grow slowly (15-30 degrees
celsius)
Mesophiles - ANS
Thermophiles - ANS heat loving microbes (50-60 C)
Extreme thermophiles - ANS thrive in very hot environments (above 125 C)
Obligate aerobes require - ANS oxygen and can NOT survive without it.
facultative anaerobes - ANS DOES NOT need oxygen but can tolerate it and grow in its
presence
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
