BIOS242 UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS COMPLETE
STUDY GUIDE
●● Autotroph
Answer: An organism that obtains carbon from inorganic carbon
dioxide.
●● Phototroph
Answer: An organism that obtains energy from light.
●● Chemotroph
Answer: An organism that obtains energy from chemical compounds.
●● Photoautotroph
Answer: An organism that acquires energy from light and carbon from
carbon dioxide.
●● Chemoautotroph
Answer: An organism obtaining energy from inorganic/organic
compounds and carbon from carbon dioxide.
, ●● Photoheterotroph
Answer: An organism that acquires energy from light and carbon from
organic compounds.
●● Chemoheterotroph
Answer: An organism that uses organic compounds for both energy and
carbon sources.
●● Saprobe
Answer: An organism that obtains energy from dead organic material.
●● Parasite
Answer: An organism that obtains energy from living organisms.
●● Psychrophile
Answer: An organism with an optimal growth temperature below 15 °C.
●● Psychrotolerant
Answer: An organism with an optimal growth temperature of 15 °C to
30 °C.
●● Mesophile
AND CORRECT ANSWERS COMPLETE
STUDY GUIDE
●● Autotroph
Answer: An organism that obtains carbon from inorganic carbon
dioxide.
●● Phototroph
Answer: An organism that obtains energy from light.
●● Chemotroph
Answer: An organism that obtains energy from chemical compounds.
●● Photoautotroph
Answer: An organism that acquires energy from light and carbon from
carbon dioxide.
●● Chemoautotroph
Answer: An organism obtaining energy from inorganic/organic
compounds and carbon from carbon dioxide.
, ●● Photoheterotroph
Answer: An organism that acquires energy from light and carbon from
organic compounds.
●● Chemoheterotroph
Answer: An organism that uses organic compounds for both energy and
carbon sources.
●● Saprobe
Answer: An organism that obtains energy from dead organic material.
●● Parasite
Answer: An organism that obtains energy from living organisms.
●● Psychrophile
Answer: An organism with an optimal growth temperature below 15 °C.
●● Psychrotolerant
Answer: An organism with an optimal growth temperature of 15 °C to
30 °C.
●● Mesophile