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Bio Sci 93 Midterm Overview Exam
Questions with Revised Correct
Detailed Answers with Rationales
Guaranteed Pass
Formula for Cellular Respiration - ✔✔C6H12O6 + 6 O2 -> 6CO2 + 6H20 + ENERGY (ATP)
Glycolysis Reactants - ✔✔1 Glucose
2 NAD+
2 ADP
Glycolysis Products - ✔✔2 ATP
2 NADH + H+
2 Pyruvate
Pyruvate Oxidation Reactants - ✔✔2 Pyruvate
2 NAD+
2 CoA
Pyruvate Oxidation Products - ✔✔2 acetyl CoA
2 CO2
Katelyn Whitman© 2025, All Rights Reserved.
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2 NADH + H+
Krebs Cycle (Citric Acid Cycle) Reactants - ✔✔2 acetyl CoA
6 NAD+
2 FAD
2ADP
Krebs Cycle (Citric Acid Cycle) Products - ✔✔2 FADH2
2 ATP
4 CO2
6 NADH + H+
Photosynthesis Formula - ✔✔6CO2 + 6H2O + sunlight ---> C6 H12 O6 + 6O2
What are the types of reactions in photosynthesis? - ✔✔Light and Dark Reactions (Calvin Cycle)
What are the reactants of the light reactions of photosynthesis? - ✔✔Water
H+ ions
Light Energy
What are the products of the light reactions of photosynthesis? - ✔✔ATP (gets used for Calvin)
NADPH (gets used for Calvin)
Oxygen (gets released)
What are the reactants of the dark reactions of photosynthesis? - ✔✔ATP
NADPH
Katelyn Whitman© 2025, All Rights Reserved.
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CO2
What are the products of the dark reactions of photosynthesis? - ✔✔ADP + Pi (gets used for light
reactions)
NADP+ (gets used for dark reactions)
Sugar (gets released)
Where is oxidative phosphorylation used? - ✔✔Final step of Cellular Respiration
Electron Transport Chain (mito matrix ->inner mito. membrane)
ATP Synthase
Proton Pumping (inner mito. membrane ->intermembrane space)
What happens in oxidative phosphorylation? - ✔✔1) H+ ions go against their concentration gradient
through proteins
2) movement of H+ ions fuel oxidation of NADH to NAD+ and simultaneously help create H20
3) H+ ions are now in the intermembrane space
4) They go down their concentration gradient into ATP Synthase
5) ATP Synthase acts as a water mill and the movement of the H+ ions fuel the creation of ATP from ADP
Where is substrate level phosphorylation used? - ✔✔Glycolysis and Krebs Cycle
What happens in substrate level phosphorylation? - ✔✔ATP Synthesis
Requires a transfer of a high energy phosphate group from a substrate to an ADP. This transfer of high
energy will result in a change from ADP to ATP.
Katelyn Whitman© 2025, All Rights Reserved.
Bio Sci 93 Midterm Overview Exam
Questions with Revised Correct
Detailed Answers with Rationales
Guaranteed Pass
Formula for Cellular Respiration - ✔✔C6H12O6 + 6 O2 -> 6CO2 + 6H20 + ENERGY (ATP)
Glycolysis Reactants - ✔✔1 Glucose
2 NAD+
2 ADP
Glycolysis Products - ✔✔2 ATP
2 NADH + H+
2 Pyruvate
Pyruvate Oxidation Reactants - ✔✔2 Pyruvate
2 NAD+
2 CoA
Pyruvate Oxidation Products - ✔✔2 acetyl CoA
2 CO2
Katelyn Whitman© 2025, All Rights Reserved.
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2 NADH + H+
Krebs Cycle (Citric Acid Cycle) Reactants - ✔✔2 acetyl CoA
6 NAD+
2 FAD
2ADP
Krebs Cycle (Citric Acid Cycle) Products - ✔✔2 FADH2
2 ATP
4 CO2
6 NADH + H+
Photosynthesis Formula - ✔✔6CO2 + 6H2O + sunlight ---> C6 H12 O6 + 6O2
What are the types of reactions in photosynthesis? - ✔✔Light and Dark Reactions (Calvin Cycle)
What are the reactants of the light reactions of photosynthesis? - ✔✔Water
H+ ions
Light Energy
What are the products of the light reactions of photosynthesis? - ✔✔ATP (gets used for Calvin)
NADPH (gets used for Calvin)
Oxygen (gets released)
What are the reactants of the dark reactions of photosynthesis? - ✔✔ATP
NADPH
Katelyn Whitman© 2025, All Rights Reserved.
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CO2
What are the products of the dark reactions of photosynthesis? - ✔✔ADP + Pi (gets used for light
reactions)
NADP+ (gets used for dark reactions)
Sugar (gets released)
Where is oxidative phosphorylation used? - ✔✔Final step of Cellular Respiration
Electron Transport Chain (mito matrix ->inner mito. membrane)
ATP Synthase
Proton Pumping (inner mito. membrane ->intermembrane space)
What happens in oxidative phosphorylation? - ✔✔1) H+ ions go against their concentration gradient
through proteins
2) movement of H+ ions fuel oxidation of NADH to NAD+ and simultaneously help create H20
3) H+ ions are now in the intermembrane space
4) They go down their concentration gradient into ATP Synthase
5) ATP Synthase acts as a water mill and the movement of the H+ ions fuel the creation of ATP from ADP
Where is substrate level phosphorylation used? - ✔✔Glycolysis and Krebs Cycle
What happens in substrate level phosphorylation? - ✔✔ATP Synthesis
Requires a transfer of a high energy phosphate group from a substrate to an ADP. This transfer of high
energy will result in a change from ADP to ATP.
Katelyn Whitman© 2025, All Rights Reserved.
