BIO 171 EXAM 4 COMPREHENSIVE QUESTIONS
AND CORRECT ANSWERS
◉ Above-ground biomass.
Answer: All living vegetation above the soil including stem, stump,
branches, bark, seeds and foliage
◉ ATP.
Answer: The molecule that provides energy in a form that all cells
can readily use to perform the work of the cell
◉ Chemoautotroph.
Answer: organism that gets its organic food energy from inorganic
chemicals (ex. hydrogen sulfide, sulfur, iron) & carbon from CO2
◉ Chemoheterotroph.
Answer: Organism that gets its energy & carbon from organic
compounds (ex. animals)
◉ Cellular respiration.
,Answer: A series of chemical reactions that convert the energy
stored in nutrients into ATP, formula is glucose + O2 = H2O + CO2 +
ATP
◉ Decomposer.
Answer: An organism who feeds on dead or decaying organisms
◉ Ecosystem.
Answer: A system that includes all biotic & abiotic facors in an
environment
◉ Eutrophication.
Answer: excessive richness of nutrients (usually phosphorous &
nitrogen) in a body of water, usually from runoff, which causes a
dense growth of plant life and death of animal life from lack of
oxygen
◉ Food web.
Answer: many overlapping food chains in an ecosystem
◉ freshwater.
Answer: water without salt
, ◉ Gross primary productivity.
Answer: Total amount of chemical potential (stored) energy
produced by photosynthesis or chemosynthesis
◉ Inorganic.
Answer: A molecule without carbon
◉ Limiting nutrient.
Answer: nutrients that limits growth of primary producers when
they are in short supply (which they often are)
◉ marine.
Answer: sea
◉ Net primary productivity.
Answer: gross primary productivity minus the energy loss to
metabolism and maintenance, amount available to consumers when
they eat autotrophs
◉ Organic.
Answer: molecule with carbon
◉ Photoautotroph.
AND CORRECT ANSWERS
◉ Above-ground biomass.
Answer: All living vegetation above the soil including stem, stump,
branches, bark, seeds and foliage
◉ ATP.
Answer: The molecule that provides energy in a form that all cells
can readily use to perform the work of the cell
◉ Chemoautotroph.
Answer: organism that gets its organic food energy from inorganic
chemicals (ex. hydrogen sulfide, sulfur, iron) & carbon from CO2
◉ Chemoheterotroph.
Answer: Organism that gets its energy & carbon from organic
compounds (ex. animals)
◉ Cellular respiration.
,Answer: A series of chemical reactions that convert the energy
stored in nutrients into ATP, formula is glucose + O2 = H2O + CO2 +
ATP
◉ Decomposer.
Answer: An organism who feeds on dead or decaying organisms
◉ Ecosystem.
Answer: A system that includes all biotic & abiotic facors in an
environment
◉ Eutrophication.
Answer: excessive richness of nutrients (usually phosphorous &
nitrogen) in a body of water, usually from runoff, which causes a
dense growth of plant life and death of animal life from lack of
oxygen
◉ Food web.
Answer: many overlapping food chains in an ecosystem
◉ freshwater.
Answer: water without salt
, ◉ Gross primary productivity.
Answer: Total amount of chemical potential (stored) energy
produced by photosynthesis or chemosynthesis
◉ Inorganic.
Answer: A molecule without carbon
◉ Limiting nutrient.
Answer: nutrients that limits growth of primary producers when
they are in short supply (which they often are)
◉ marine.
Answer: sea
◉ Net primary productivity.
Answer: gross primary productivity minus the energy loss to
metabolism and maintenance, amount available to consumers when
they eat autotrophs
◉ Organic.
Answer: molecule with carbon
◉ Photoautotroph.
