MICROBIOLOGY 2117 UPDATED COMPREHENSIVE
EXAM QUESTIONS AND ANSWERS SURE A+
✔✔cellular respiration - ✔✔complete breakdown of glucose to co2 and h2o
✔✔bacteria will go through cellular respiration - ✔✔cytosol
bacteria don't have mitochondria
✔✔methods of anaerobic ATP production - ✔✔glycolysis
fermentation
✔✔glycolysis - ✔✔c6h12o6 split in half
c6h12o6 -----.> 2pyruvic acid +2nadh + 2atp
does not require o2
occurs in the cytoplasm of the cell
✔✔fermentation pathways - ✔✔2pyruvic acid + 2nadh ----> 2 lactic acid
2 pyruvic acid + 2nadh -----> 2 ethanol + 2co2
2 atp will be produced
✔✔when there is no oxygen present different prokaryotic cells make - ✔✔propionic acid
, acetic acid
✔✔formation of acetylcoa - ✔✔2 pyruvic acid ----> 2nadh+ 2co2 + 2 acetylcoa
✔✔2acetylcoa - ✔✔goes to kerbs cycle
✔✔Krebs cycle - ✔✔2acetylcoa----> 4co2+ 6nadh+2fadh2+2atp
✔✔etc (electron transport chain) - ✔✔6nadh+2fadh-----> 34atp + h2o
most of the ATP is made in the ETC from nadh and fadh
3atp = 1 nadh
2atp = 1fadh
✔✔pyruvic acid has how many carbons - ✔✔3
✔✔where in the cell glycolysis occur - ✔✔cytosol
✔✔chemiosmosis - ✔✔in etc H+ bing to o2 and making h2o
✔✔where do the reactions for cellular respiration occur in bacteria - ✔✔cytosol
✔✔lithotrophs - ✔✔bacteria that is used nitrate, sulfate, iron & hydrogen as the electron
acceptor.
(they don't use o2 as the ultimate electron acceptor)
✔✔fats enter the krebs cycle as acetylcoa - ✔✔true
✔✔example of exoenzyme - ✔✔protease
✔✔why would cell produce an exoenzyme, protease to break down proteins -
✔✔proteins are too large to cross cytoplasmis membrane, so the protein catabolism
happens outside of the cell by secreting protease.
✔✔what do proteins have to lose to become pyruvic acid - ✔✔get rid of nh2 group -
deamination
✔✔chemoheterotophs - ✔✔depend on outside sources for inorganic and organic
compounds for energy
✔✔photosynthesis - ✔✔ability to change co2 into sugar
co2+h2o+light energy ---->c6h12o6+h2o+o2
EXAM QUESTIONS AND ANSWERS SURE A+
✔✔cellular respiration - ✔✔complete breakdown of glucose to co2 and h2o
✔✔bacteria will go through cellular respiration - ✔✔cytosol
bacteria don't have mitochondria
✔✔methods of anaerobic ATP production - ✔✔glycolysis
fermentation
✔✔glycolysis - ✔✔c6h12o6 split in half
c6h12o6 -----.> 2pyruvic acid +2nadh + 2atp
does not require o2
occurs in the cytoplasm of the cell
✔✔fermentation pathways - ✔✔2pyruvic acid + 2nadh ----> 2 lactic acid
2 pyruvic acid + 2nadh -----> 2 ethanol + 2co2
2 atp will be produced
✔✔when there is no oxygen present different prokaryotic cells make - ✔✔propionic acid
, acetic acid
✔✔formation of acetylcoa - ✔✔2 pyruvic acid ----> 2nadh+ 2co2 + 2 acetylcoa
✔✔2acetylcoa - ✔✔goes to kerbs cycle
✔✔Krebs cycle - ✔✔2acetylcoa----> 4co2+ 6nadh+2fadh2+2atp
✔✔etc (electron transport chain) - ✔✔6nadh+2fadh-----> 34atp + h2o
most of the ATP is made in the ETC from nadh and fadh
3atp = 1 nadh
2atp = 1fadh
✔✔pyruvic acid has how many carbons - ✔✔3
✔✔where in the cell glycolysis occur - ✔✔cytosol
✔✔chemiosmosis - ✔✔in etc H+ bing to o2 and making h2o
✔✔where do the reactions for cellular respiration occur in bacteria - ✔✔cytosol
✔✔lithotrophs - ✔✔bacteria that is used nitrate, sulfate, iron & hydrogen as the electron
acceptor.
(they don't use o2 as the ultimate electron acceptor)
✔✔fats enter the krebs cycle as acetylcoa - ✔✔true
✔✔example of exoenzyme - ✔✔protease
✔✔why would cell produce an exoenzyme, protease to break down proteins -
✔✔proteins are too large to cross cytoplasmis membrane, so the protein catabolism
happens outside of the cell by secreting protease.
✔✔what do proteins have to lose to become pyruvic acid - ✔✔get rid of nh2 group -
deamination
✔✔chemoheterotophs - ✔✔depend on outside sources for inorganic and organic
compounds for energy
✔✔photosynthesis - ✔✔ability to change co2 into sugar
co2+h2o+light energy ---->c6h12o6+h2o+o2
