BIO 152 Exam 3 uky Jones UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Electron transport chain - CORRECT ANSWER - -Protein complexes use energy in
electrons to pump H+ from matrix to intermembrane space
-Complex IV passes off electron to oxygen to form water
-O2 split in two
Transfer of energy - CORRECT ANSWER - Energy transferred from higher energy
electrons in NADH to proteins, each transfer uses energy to move H
Chemiosmotic coupling - CORRECT ANSWER - -Gradient
-Electrical; charge of H+
-Chemical; [H]int vs [H]matrix
ATP Synthase - CORRECT ANSWER - -Turnstile shape
-Allows H to flow across membrane
-Flow of H causes rotor to turn
-Turn of rotor couples phosphate to ADP
-Results in ATP
What happens if there's no oxygen? - CORRECT ANSWER - Anaerobic exercise
Anaerobic environment - CORRECT ANSWER - No electron adapter, no place for
NADH to leave its electrons, no NAD to accept H and electrons, no glycolysis can proceed, no
ATP generated
, Fermentation - CORRECT ANSWER - No O2, lactic acid fermentation (animals), ethanol
fermentation (yeasts and some bacteria)
Lactic Acid Fermentation - CORRECT ANSWER - Give the electrons back to pyruvate
with oxygen, forms lactate
Lactic Acis - CORRECT ANSWER - Converted back to pyruvate with oxygen, converted
back to glucose in liver (requires ATP)
Ethanol fermentation - CORRECT ANSWER - -Remove CO2 like pyruvate processing
-Give electrons to acetyl group
-Forms ethanol
Uses of ethanol fermentation - CORRECT ANSWER - Baker's yeast, brewing, distilling
Types of bacterial respiration - CORRECT ANSWER - Aerobic and anaerobic
Anaerobic bacterial respiration - CORRECT ANSWER - Obligate anaerobic (die if
exposed to oxygen), facultative anaerobic (normally use oxygen but will switch if none)
Aerobic bacterial respiration - CORRECT ANSWER - Similar to mitochondria, obligate
aerobic, facilitative aerobic
Alternate bacterial pathways - CORRECT ANSWER - Lithotropes and sulfate reducing
bacteria
Lithotrope - CORRECT ANSWER - "Rock eater", reduce inorganic molecules instead of
glucose
ACTUAL Exam Questions and CORRECT
Answers
Electron transport chain - CORRECT ANSWER - -Protein complexes use energy in
electrons to pump H+ from matrix to intermembrane space
-Complex IV passes off electron to oxygen to form water
-O2 split in two
Transfer of energy - CORRECT ANSWER - Energy transferred from higher energy
electrons in NADH to proteins, each transfer uses energy to move H
Chemiosmotic coupling - CORRECT ANSWER - -Gradient
-Electrical; charge of H+
-Chemical; [H]int vs [H]matrix
ATP Synthase - CORRECT ANSWER - -Turnstile shape
-Allows H to flow across membrane
-Flow of H causes rotor to turn
-Turn of rotor couples phosphate to ADP
-Results in ATP
What happens if there's no oxygen? - CORRECT ANSWER - Anaerobic exercise
Anaerobic environment - CORRECT ANSWER - No electron adapter, no place for
NADH to leave its electrons, no NAD to accept H and electrons, no glycolysis can proceed, no
ATP generated
, Fermentation - CORRECT ANSWER - No O2, lactic acid fermentation (animals), ethanol
fermentation (yeasts and some bacteria)
Lactic Acid Fermentation - CORRECT ANSWER - Give the electrons back to pyruvate
with oxygen, forms lactate
Lactic Acis - CORRECT ANSWER - Converted back to pyruvate with oxygen, converted
back to glucose in liver (requires ATP)
Ethanol fermentation - CORRECT ANSWER - -Remove CO2 like pyruvate processing
-Give electrons to acetyl group
-Forms ethanol
Uses of ethanol fermentation - CORRECT ANSWER - Baker's yeast, brewing, distilling
Types of bacterial respiration - CORRECT ANSWER - Aerobic and anaerobic
Anaerobic bacterial respiration - CORRECT ANSWER - Obligate anaerobic (die if
exposed to oxygen), facultative anaerobic (normally use oxygen but will switch if none)
Aerobic bacterial respiration - CORRECT ANSWER - Similar to mitochondria, obligate
aerobic, facilitative aerobic
Alternate bacterial pathways - CORRECT ANSWER - Lithotropes and sulfate reducing
bacteria
Lithotrope - CORRECT ANSWER - "Rock eater", reduce inorganic molecules instead of
glucose
