UCI Bio 93 Midterm 2 Exam 2026
Questions and Answers
What is a metabolic pathway? - Correct answer-A pathway that a molecule goes
through, resulting in a specific product.
What is metabolism? - Correct answer-The totality of an organisms chemical
reactions
Gibbs free energy - Correct answer-Portion of a system that can perform work
when temp and pressure are uniform throughout the system.
What is a way to show change in free energy? - Correct answer-
What does a negative Delta G mean? - Correct answer-A process that is
spontaneous
What does spontaneous mean? - Correct answer-Means that a process will occur.
What happens to the energy in a exergonic reaction? - Correct answer-It is released
What happens to the energy in an endergonic reaction? - Correct answer-It is
consumed in the reaction.
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,True or False
A cell must have endergonic and exergonic reactions - Correct answer-True
Is ATP Hydrolysis an exergonic or endergonic reaction? - Correct answer-
Exergonic
Mechanical and Transport work are what kind of reactions? - Correct answer-
Endergonic
Why does ATP hydrolysis release so much energy? - Correct answer-All 3
phosphate groups ate neg. charged, so there is mutual repulsion within all of them
What do enzymes do? - Correct answer-Lower energy barriers to drive chemical
reactions
What does the suffix -ase usually mean? - Correct answer-An enzyme
How does an exergonic energy profile look like? - Correct answer-
Enzymes are biological ___________ - Correct answer-Catalysts
What is the site of cellular respiration in all eukaryotic cells? - Correct answer-
Mitochondria
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, In Biology, what is another word for the addition of electrons to a substance? -
Correct answer-Reduction
In Biology, what is another word for the loss of electrons to a substance? - Correct
answer-Oxidation
What is cellular respiration? - Correct answer-Catabolic reactions used to generate
ATP
Where does glycolysis happen? - Correct answer-In the cytosol
What is glycolysis? - Correct answer-The breaking down of glucose into 2
molecules of a compound of pyruvate.
What happens in the citric acid cycle? - Correct answer-The breakdown of glucose
to carbon dioxide is completed.
What is stage 1 of cellular respiration? - Correct answer-Glycolysis
What is stage 2 of cellular respiration? - Correct answer-Pyruvate oxidation and
citric acid cycle
What is stage 3 of cellular respiration? - Correct answer-Oxidative Phosphorylation
What is the purpose of NADH? - Correct answer-Transfers electrons from food to
electron transport chain.
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Questions and Answers
What is a metabolic pathway? - Correct answer-A pathway that a molecule goes
through, resulting in a specific product.
What is metabolism? - Correct answer-The totality of an organisms chemical
reactions
Gibbs free energy - Correct answer-Portion of a system that can perform work
when temp and pressure are uniform throughout the system.
What is a way to show change in free energy? - Correct answer-
What does a negative Delta G mean? - Correct answer-A process that is
spontaneous
What does spontaneous mean? - Correct answer-Means that a process will occur.
What happens to the energy in a exergonic reaction? - Correct answer-It is released
What happens to the energy in an endergonic reaction? - Correct answer-It is
consumed in the reaction.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,True or False
A cell must have endergonic and exergonic reactions - Correct answer-True
Is ATP Hydrolysis an exergonic or endergonic reaction? - Correct answer-
Exergonic
Mechanical and Transport work are what kind of reactions? - Correct answer-
Endergonic
Why does ATP hydrolysis release so much energy? - Correct answer-All 3
phosphate groups ate neg. charged, so there is mutual repulsion within all of them
What do enzymes do? - Correct answer-Lower energy barriers to drive chemical
reactions
What does the suffix -ase usually mean? - Correct answer-An enzyme
How does an exergonic energy profile look like? - Correct answer-
Enzymes are biological ___________ - Correct answer-Catalysts
What is the site of cellular respiration in all eukaryotic cells? - Correct answer-
Mitochondria
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, In Biology, what is another word for the addition of electrons to a substance? -
Correct answer-Reduction
In Biology, what is another word for the loss of electrons to a substance? - Correct
answer-Oxidation
What is cellular respiration? - Correct answer-Catabolic reactions used to generate
ATP
Where does glycolysis happen? - Correct answer-In the cytosol
What is glycolysis? - Correct answer-The breaking down of glucose into 2
molecules of a compound of pyruvate.
What happens in the citric acid cycle? - Correct answer-The breakdown of glucose
to carbon dioxide is completed.
What is stage 1 of cellular respiration? - Correct answer-Glycolysis
What is stage 2 of cellular respiration? - Correct answer-Pyruvate oxidation and
citric acid cycle
What is stage 3 of cellular respiration? - Correct answer-Oxidative Phosphorylation
What is the purpose of NADH? - Correct answer-Transfers electrons from food to
electron transport chain.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
