BIOL 2051 Exam 2 (Brininstool) Questions with 100%
Verified Answers Latest Update
Question: List of macronutrients
Answer:
C, O, N, H, P, S, K, Mg, Ca, Na
Question: Def of macronutrient
Answer:
nutrient needed in large quantities
Question: micronutrient
Answer:
nutrient needed in small quanitities
Question: list of macromolecules
Answer:
protein, lipid, polysaccharide, lipopolysaccharide, DNA, RNA
Question: example of micronutrient
Answer:
iron
Question: What is Carbon used for?
Answer:
needed to make organic compounds, such as amino acids, fatty acids, sugars, and
nitrogenous bases
Question: heterotroph
Answer:
organism that obtains its carbon from organic compounds
Question: If an organism gets its carbon from gluocse, it is a ______.
Answer:
heteroptroph
Question: autotroph
, Answer:
organism that obtains its carbon source from CO2
Question: Calvin-Benson cycle is used by autotrophs to make ________
Answer:
carbon
Question: initial reaction of Calvin-Benson cycle?
Answer:
CO2 fixation by carboxylation
Question: RubisCO fixes CO2 (1 carbon) by binding it and ribulose 1,5-biphosphate (5
carbons) to form two 3-carbon molecules of _________
Answer:
3-phosphoglycerate
Question: What does RubisCO stand for?
Answer:
Ribulose-1,5-bisphosphate carboxylase/oxygenase
Question: what happens if RubisCO doesn`t bind to CO2?
Answer:
no sugars will be made
Question: what organelle do autotrophic prokaryotes use to store RubisCO?
Answer:
carboxysome
Question: Calvin-Benson cycle
Answer:
the fixation of CO2 into reduced organic compounds; used by autotrophs
Question: reverse citric acid cycle
Answer:
metabolic pathway used by green sulfur bacteria like Chlorobium to produce organic
compounds from carbon dioxide and water
, Question: Hydroxypropionate pathway
Answer:
used by green nonsulfur bacteria like Chloroflexus to fix CO2
Question: oxic
Answer:
environment containing oxygen
Question: anoxic
Answer:
environment lacking oxygen
Question: list of 5 groups of oxygen relationships
Answer:
aerobe-obligate, aerobe-faculative, aerobe-microaerophilic, anaerobe-aerotolerate,
anaerobe-obliagte
Question: thioglycolate broth
Answer:
complex medium that separates microbes based on oxygen requirements
Question: what does thioglycolate broth contain that helps us determine oxygen
requirements
Answer:
reducing agent
Question: what does a reducing agent do in a thioglycate broth (besides determine O2
requirements)
Answer:
reacts with oxygen to form water and is used to remove oxygen from the broth
Question: how would an obligate aerobe present itself in a THIO broth?
Answer:
growth would be concentrated at the top of the oxic zone
Question: how would an obligate anaerobe present itself in a THIO broth?
Answer:
Verified Answers Latest Update
Question: List of macronutrients
Answer:
C, O, N, H, P, S, K, Mg, Ca, Na
Question: Def of macronutrient
Answer:
nutrient needed in large quantities
Question: micronutrient
Answer:
nutrient needed in small quanitities
Question: list of macromolecules
Answer:
protein, lipid, polysaccharide, lipopolysaccharide, DNA, RNA
Question: example of micronutrient
Answer:
iron
Question: What is Carbon used for?
Answer:
needed to make organic compounds, such as amino acids, fatty acids, sugars, and
nitrogenous bases
Question: heterotroph
Answer:
organism that obtains its carbon from organic compounds
Question: If an organism gets its carbon from gluocse, it is a ______.
Answer:
heteroptroph
Question: autotroph
, Answer:
organism that obtains its carbon source from CO2
Question: Calvin-Benson cycle is used by autotrophs to make ________
Answer:
carbon
Question: initial reaction of Calvin-Benson cycle?
Answer:
CO2 fixation by carboxylation
Question: RubisCO fixes CO2 (1 carbon) by binding it and ribulose 1,5-biphosphate (5
carbons) to form two 3-carbon molecules of _________
Answer:
3-phosphoglycerate
Question: What does RubisCO stand for?
Answer:
Ribulose-1,5-bisphosphate carboxylase/oxygenase
Question: what happens if RubisCO doesn`t bind to CO2?
Answer:
no sugars will be made
Question: what organelle do autotrophic prokaryotes use to store RubisCO?
Answer:
carboxysome
Question: Calvin-Benson cycle
Answer:
the fixation of CO2 into reduced organic compounds; used by autotrophs
Question: reverse citric acid cycle
Answer:
metabolic pathway used by green sulfur bacteria like Chlorobium to produce organic
compounds from carbon dioxide and water
, Question: Hydroxypropionate pathway
Answer:
used by green nonsulfur bacteria like Chloroflexus to fix CO2
Question: oxic
Answer:
environment containing oxygen
Question: anoxic
Answer:
environment lacking oxygen
Question: list of 5 groups of oxygen relationships
Answer:
aerobe-obligate, aerobe-faculative, aerobe-microaerophilic, anaerobe-aerotolerate,
anaerobe-obliagte
Question: thioglycolate broth
Answer:
complex medium that separates microbes based on oxygen requirements
Question: what does thioglycolate broth contain that helps us determine oxygen
requirements
Answer:
reducing agent
Question: what does a reducing agent do in a thioglycate broth (besides determine O2
requirements)
Answer:
reacts with oxygen to form water and is used to remove oxygen from the broth
Question: how would an obligate aerobe present itself in a THIO broth?
Answer:
growth would be concentrated at the top of the oxic zone
Question: how would an obligate anaerobe present itself in a THIO broth?
Answer:
