Multiple Choice
Which of the following pathways are commonly used to produce ATP during skeletal muscle contraction?
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3. Energy & Cell Processes
Introduction to Cellular Respiration
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which one of the following molecules is a by-product of cellular respiration?
A
Water.
B
Glucose.
C
Pyruvate.
D
Oxygen.
E
ADP.
Verified step by step guidance1
Understand the process of cellular respiration, which involves breaking down glucose to produce energy in the form of ATP, with by-products being released.
Recall the main stages of cellular respiration: glycolysis, the citric acid cycle (Krebs cycle), and oxidative phosphorylation.
Identify the by-products produced at each stage: during glycolysis, pyruvate is produced; during the citric acid cycle, carbon dioxide is released; and during oxidative phosphorylation, water is formed as a by-product.
Recognize that water is formed when electrons are transferred to oxygen in the electron transport chain, combining with protons to form water.
Conclude that water is the by-product of cellular respiration, as it is produced during the final stage of the process.
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