Grade 12 Cellular Respiration Worksheet
A comprehensive worksheet for Grade 12 Biology students covering key concepts of cellular respiration, including glycolysis, the Krebs cycle, and oxidative phosphorylation.
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Grade 12 Cellular Respiration Worksheet
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Read each question carefully and answer to the best of your ability. Refer to your notes and textbook if needed.
1. Which of the following is the correct order of the main stages of cellular respiration?
Krebs cycle, Glycolysis, Oxidative phosphorylation
Glycolysis, Krebs cycle, Oxidative phosphorylation
Oxidative phosphorylation, Glycolysis, Krebs cycle
Glycolysis, Oxidative phosphorylation, Krebs cycle
2. Where does glycolysis occur in the cell?
Mitochondrial matrix
Cytosol
Inner mitochondrial membrane
Outer mitochondrial membrane
3. The primary goal of cellular respiration is to produce , which is the main energy currency of the cell.
4. In the absence of oxygen, pyruvate is converted into or through fermentation.
5. Briefly describe the role of NADH and FADH2 in cellular respiration.
6. The electron transport chain generates the majority of ATP during cellular respiration.
True
False
7. Oxygen is directly consumed during the Krebs cycle.
True
False
8. Analyze the diagram of cellular respiration below and answer the questions that follow.
a. Identify the molecule that enters Glycolysis.
b. What is the net ATP production from Glycolysis?
c. Where do the products of the Krebs cycle go next in the process?
9. Compare and contrast aerobic and anaerobic respiration, highlighting the key differences in reactants, products, and ATP yield. Explain why anaerobic respiration is less efficient.