1|Page
BIOD 171 Module 2 Exam|| LATEST 2025/ 2026
ACTUAL EXAM WITH COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
EXPLANATIONS (100% VERIFIED ANSWERS)
|ALREADY GRADED A+| ||PROFESSOR VERIFIED||
||NEWEST UPDATE!!!||
ATP has the energy to _____, while ADP has the capacity
to _____ energy. - ANSWER-Donate, Accept
Chemotrophs can be subdivided into what two additional
subgroups? - ANSWER-The two additional subgroups the
chemotrophs can be subdivided into organotrophs and
lithotrophs.
Chemotrophs, which acquire energy from preformed
chemicals found in the environment, can be divided into
either organotrophs (removing electrons from organic
molecules such as glucose) or lithotrophs, which remove
electrons from inorganic molecules.
Chemotrophs utilize form of phosphorylation? - ANSWER-
The form of phosphorylation that chemotrophs utilize is
oxidative.
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Chemotrophs use oxidative phosphorylation (may also
accept substrate level phosphorylation). Oxidative
phosphorylation utilizes the energy released by the
chemical oxidation of nutrients to reform ATP.
What are the three distinct stages in the catabolism of
glucose? - ANSWER-The three distinct stages in the
catabolism of glucose are glycolysis, tricarboxylic acid
cycle, and oxidative phosphorylation.
Glycolysis is the first step of this process and yields 2
molecules of ATP. Next, by either fermentation (or
respiration) 2 additional molecules of ATP can be
produced. Last, the electron transport chain (ETC)
produces 34 ATP via an oxidative phosphorylation event at
the mitochondrial membrane.
What are the reactants of glycolysis? - ANSWER-The
reactant of glycolysis is glucose.
Reactants are defined as any molecules present and
involved at the beginning of a specific chemical reaction
(ie) glycolysis. In terms of writing out a chemical reaction,
the reactants of glycolysis are glucose, the co-enzyme
NAD+ and ATP.
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What are the two main strategies for replenishing cellular
concentrations of NAD+, and when these strategies be
utilized? - ANSWER-The two main strategies for
replenishing cellular concentrations of NAD+ are
fermentation and respiration. Fermentation occurs in the
absence of oxygen while respiration occurs under aerobic
conditions.
Fermentation and Respiration are the two strategies used
by the cell to convert NADH (end product of glycolysis)
back to NAD+. Fermentation occurs in the absence of
oxygen (anaerobic conditions) while respiration occurs
under aerobic (presence of oxygen) conditions. Notably,
respiration is more efficient that fermentation.
How are the TCA and ETC related? - ANSWER-The TCA
and ETC are related because the TCA is used to fuel the
ETC.
An organism that derives its energy (henerates ATP) from
photons of light is called a _____? - ANSWER-
Phototrophic microgranism - Phototrophs
The presence of what molecule 'signals' to the cell that
glycolysis is about to start? - ANSWER-Glucose-6-
Phosphate (G6P)
BIOD 171 Module 2 Exam|| LATEST 2025/ 2026
ACTUAL EXAM WITH COMPLETE QUESTIONS AND
CORRECT DETAILED ANSWERS WITH
EXPLANATIONS (100% VERIFIED ANSWERS)
|ALREADY GRADED A+| ||PROFESSOR VERIFIED||
||NEWEST UPDATE!!!||
ATP has the energy to _____, while ADP has the capacity
to _____ energy. - ANSWER-Donate, Accept
Chemotrophs can be subdivided into what two additional
subgroups? - ANSWER-The two additional subgroups the
chemotrophs can be subdivided into organotrophs and
lithotrophs.
Chemotrophs, which acquire energy from preformed
chemicals found in the environment, can be divided into
either organotrophs (removing electrons from organic
molecules such as glucose) or lithotrophs, which remove
electrons from inorganic molecules.
Chemotrophs utilize form of phosphorylation? - ANSWER-
The form of phosphorylation that chemotrophs utilize is
oxidative.
,2|Page
Chemotrophs use oxidative phosphorylation (may also
accept substrate level phosphorylation). Oxidative
phosphorylation utilizes the energy released by the
chemical oxidation of nutrients to reform ATP.
What are the three distinct stages in the catabolism of
glucose? - ANSWER-The three distinct stages in the
catabolism of glucose are glycolysis, tricarboxylic acid
cycle, and oxidative phosphorylation.
Glycolysis is the first step of this process and yields 2
molecules of ATP. Next, by either fermentation (or
respiration) 2 additional molecules of ATP can be
produced. Last, the electron transport chain (ETC)
produces 34 ATP via an oxidative phosphorylation event at
the mitochondrial membrane.
What are the reactants of glycolysis? - ANSWER-The
reactant of glycolysis is glucose.
Reactants are defined as any molecules present and
involved at the beginning of a specific chemical reaction
(ie) glycolysis. In terms of writing out a chemical reaction,
the reactants of glycolysis are glucose, the co-enzyme
NAD+ and ATP.
, 3|Page
What are the two main strategies for replenishing cellular
concentrations of NAD+, and when these strategies be
utilized? - ANSWER-The two main strategies for
replenishing cellular concentrations of NAD+ are
fermentation and respiration. Fermentation occurs in the
absence of oxygen while respiration occurs under aerobic
conditions.
Fermentation and Respiration are the two strategies used
by the cell to convert NADH (end product of glycolysis)
back to NAD+. Fermentation occurs in the absence of
oxygen (anaerobic conditions) while respiration occurs
under aerobic (presence of oxygen) conditions. Notably,
respiration is more efficient that fermentation.
How are the TCA and ETC related? - ANSWER-The TCA
and ETC are related because the TCA is used to fuel the
ETC.
An organism that derives its energy (henerates ATP) from
photons of light is called a _____? - ANSWER-
Phototrophic microgranism - Phototrophs
The presence of what molecule 'signals' to the cell that
glycolysis is about to start? - ANSWER-Glucose-6-
Phosphate (G6P)
