BSC 1010 Chapter 9 Questions With Complete Solutions
2 phases of glycolysis Correct Answers 1. energy investment
phase
2. energy payoff phase
2 steps of alcohol fermentation Correct Answers 1. releases
CO2 from pyruvate
2. produces NAD+ and Ethanol
*used in yeast
Aerobic respiration Correct Answers consumes organic
molecules and O2 and yields ATP
Alcohol fermentation Correct Answers pyruvate is converted to
ethanol
Catabolic pathways Correct Answers yield energy by oxidizing
organic fuels
-releases stored energy by breaking down complex molecules
-exergonic
Cellular respiration Correct Answers -the fuel (glucose) is
broken down (oxidized) and O2 is reduced
-electrons from organic compounds are usually first transferred
to NAD+ (coenzyme)
-energy is released as the electrons associated with H-ions are
transferred to O2 (a lower energy state)
Chemiosmosis Correct Answers Energy-coupling mechanics
, -Energy released as e- are passed down the ETC is used to pump
H+ from mitochondrial matrix to the inter membrane space
(certain electron carriers in ETC accept and release H+ along w/
the E-'s
-H+ then move down its concentration gradient back across the
membrane, passing through the protein complex ATP synthase
-H+ moves into binding sites on the rotor of ATP synthase
causing it to spin in a way that catalyzes phosphorylation of
ADP to ATP
-every rotation of ATP synthase creates an ATP by moving a H
from the inter membrane space to the mitochondrial matrix
*energy stored in H+ gradient across a membrane couples the
redox reactions of the ETC to ATP synthase
Citric acid cycle Correct Answers Kreb cycle
-Occurs in the mitochondria
-has 8 steps
-initial stage, acetyl group combines with oxaloacetate to form
citrate
-following 7 steps breaks down citrate to oxaloacetate
-completes the breakdown of pyruvate to CO2
-the cycle oxidizes organic fuel derived from pyruvate to
generate 1ATP, 3NADH and 1 FADH2 per turn
DHAP Correct Answers dihydroxyacetone phosphate
ETC Correct Answers located in inner membrane of
mitochondrion (Cristae)
-mostly made of proteins (in multi protein complexes)
2 phases of glycolysis Correct Answers 1. energy investment
phase
2. energy payoff phase
2 steps of alcohol fermentation Correct Answers 1. releases
CO2 from pyruvate
2. produces NAD+ and Ethanol
*used in yeast
Aerobic respiration Correct Answers consumes organic
molecules and O2 and yields ATP
Alcohol fermentation Correct Answers pyruvate is converted to
ethanol
Catabolic pathways Correct Answers yield energy by oxidizing
organic fuels
-releases stored energy by breaking down complex molecules
-exergonic
Cellular respiration Correct Answers -the fuel (glucose) is
broken down (oxidized) and O2 is reduced
-electrons from organic compounds are usually first transferred
to NAD+ (coenzyme)
-energy is released as the electrons associated with H-ions are
transferred to O2 (a lower energy state)
Chemiosmosis Correct Answers Energy-coupling mechanics
, -Energy released as e- are passed down the ETC is used to pump
H+ from mitochondrial matrix to the inter membrane space
(certain electron carriers in ETC accept and release H+ along w/
the E-'s
-H+ then move down its concentration gradient back across the
membrane, passing through the protein complex ATP synthase
-H+ moves into binding sites on the rotor of ATP synthase
causing it to spin in a way that catalyzes phosphorylation of
ADP to ATP
-every rotation of ATP synthase creates an ATP by moving a H
from the inter membrane space to the mitochondrial matrix
*energy stored in H+ gradient across a membrane couples the
redox reactions of the ETC to ATP synthase
Citric acid cycle Correct Answers Kreb cycle
-Occurs in the mitochondria
-has 8 steps
-initial stage, acetyl group combines with oxaloacetate to form
citrate
-following 7 steps breaks down citrate to oxaloacetate
-completes the breakdown of pyruvate to CO2
-the cycle oxidizes organic fuel derived from pyruvate to
generate 1ATP, 3NADH and 1 FADH2 per turn
DHAP Correct Answers dihydroxyacetone phosphate
ETC Correct Answers located in inner membrane of
mitochondrion (Cristae)
-mostly made of proteins (in multi protein complexes)
