BIO 152 MODULE 3 MOCK EXAM WITH
ANSWER RATIONALES 2026
◉ Citric Acid Cycle.
Answer: Completes the breakdown of glucose by oxidizing a
derivative of pyruvate to carbon dioxide.
ATP, NADH, FADH2 produced
◉ oxidative phosphorylation.
Answer: The production of ATP using energy derived from the redox
reactions of an electron transport chain; the third major stage of
cellular respiration
electrons move down the chain releasing energy and pumping
protons out of gradiant
◉ substrate-level phosphorylation.
Answer: The enzyme-catalyzed formation of ATP by direct transfer
of a phosphate group to ADP from an intermediate substrate in
catabolism.
◉ Krebs cycle.
Answer: pyruvic acid is broken down into carbon dioxide in a series
of energy-extracting reactions
,◉ Carbohydrates.
Answer: Broken down to simple sugars
◉ Fats.
Answer: broken to glycerol and fatty acids, glycerol into glycolysis
◉ Proteins.
Answer: Nutrients the body uses to build and maintain its cells and
tissues
◉ Electron Transport Chain (ETC).
Answer: series of electron carrier proteins that shuttle high-energy
electrons during ATP-generating reactions
higher H+ on outer layer
◉ Transfer of Energy.
Answer: transferred from high energy electrons in NADH to proteins
uses energy to more H
lowest energy state= Oxygen
◉ chemiosmotic coupling.
, Answer: Mechanism that uses the energy stored in a transmembrane
proton gradient to drive an energy-requiring process, such as the
synthesis of ATP or the transport of a molecule across a membrane.
◉ The mitochondrial electron transport chain.
Answer: high-energy electrons allow H+ to be pumped across the
mitochondrial inner membrane
◉ anaerobic exercise.
Answer: intense physical activity that requires little oxygen but uses
short bursts of energy
◉ anaerobic environment.
Answer: one that has little or no oxygen, environment in which
organic material is broken down
no electron acceptor for ETC
◉ Fermentation.
Answer: A catabolic process that makes a limited amount of ATP
from glucose without an electron transport chain and that produces
a characteristic end product, such as ethyl alcohol or lactic acid.
◉ Bacterial Respiration.
ANSWER RATIONALES 2026
◉ Citric Acid Cycle.
Answer: Completes the breakdown of glucose by oxidizing a
derivative of pyruvate to carbon dioxide.
ATP, NADH, FADH2 produced
◉ oxidative phosphorylation.
Answer: The production of ATP using energy derived from the redox
reactions of an electron transport chain; the third major stage of
cellular respiration
electrons move down the chain releasing energy and pumping
protons out of gradiant
◉ substrate-level phosphorylation.
Answer: The enzyme-catalyzed formation of ATP by direct transfer
of a phosphate group to ADP from an intermediate substrate in
catabolism.
◉ Krebs cycle.
Answer: pyruvic acid is broken down into carbon dioxide in a series
of energy-extracting reactions
,◉ Carbohydrates.
Answer: Broken down to simple sugars
◉ Fats.
Answer: broken to glycerol and fatty acids, glycerol into glycolysis
◉ Proteins.
Answer: Nutrients the body uses to build and maintain its cells and
tissues
◉ Electron Transport Chain (ETC).
Answer: series of electron carrier proteins that shuttle high-energy
electrons during ATP-generating reactions
higher H+ on outer layer
◉ Transfer of Energy.
Answer: transferred from high energy electrons in NADH to proteins
uses energy to more H
lowest energy state= Oxygen
◉ chemiosmotic coupling.
, Answer: Mechanism that uses the energy stored in a transmembrane
proton gradient to drive an energy-requiring process, such as the
synthesis of ATP or the transport of a molecule across a membrane.
◉ The mitochondrial electron transport chain.
Answer: high-energy electrons allow H+ to be pumped across the
mitochondrial inner membrane
◉ anaerobic exercise.
Answer: intense physical activity that requires little oxygen but uses
short bursts of energy
◉ anaerobic environment.
Answer: one that has little or no oxygen, environment in which
organic material is broken down
no electron acceptor for ETC
◉ Fermentation.
Answer: A catabolic process that makes a limited amount of ATP
from glucose without an electron transport chain and that produces
a characteristic end product, such as ethyl alcohol or lactic acid.
◉ Bacterial Respiration.
