BIOD101 / BIOD 101 Module 3:
(Latest Update 2025 / 2026) Essential Biology I with Lab | Questions & Answers | Grade A 100% Correct - Portage Learning
Question:
What is the role of ATP synthase in the electron transport chain?
Answer:
The ATP synthase is responsible for generating ATP through chemiosmosis.Chemiosmosis is an energy-coupling process which harnesses the energy that exists within the proton ion gradient and uses it to drive ATP synthesis
Question:
What are the two main forms of fermentation?
Answer:
Fermentation is the catabolic process of breaking down glucose for energy and can be divided into two main forms (1) alcohol fermentation (2) lactic acid fermentation 1 / 3
Question:
True or False. While ATP can be generated in the absence of oxygen, the amount is minimal relative to aerobic respiration.
Answer:
True
Question:
Which of the following chemical reactions involves the transfer of electrons?
Answer:
Redox
Question:
True or False: Isocitrate is produced in Reaction 1 of the CAC.
Answer:
False; Isocitrate is produced in Reaction 2 of the CAC
Citrate is produced in Reaction 1 of the CAC
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Question:
Match each of the following intermediates with the correct description.
- Phosphofructokinase
- Glucose 6-Phosphate
- Phosphoglucoisomerase
- Glucose 3-Phosphate
Answer:
- Phosphofructokinase: Transfers ATP phosphate group to the opposite end of
fructose 6-phosphate
- Glucose 6-Phosphate: High-energy intermediate formed by hexokinase
- Phosphoglucoisomerase: Converts G6P into fructose 6-phosphate
- Glucose 3-Phosphate: Produced by aldolase
Question:
Which of the electron carriers has the greatest affinity for electrons?
Answer:
Oxygen because it has the highest electronegativity and literally pulls electrons down the ETC.
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