cellular energy test grade 10

📚 Quick Study Guide

• ⚛️ Cellular respiration is how cells generate energy in the form of ATP (adenosine triphosphate).
• 🍎 The main stages of cellular respiration are glycolysis, the Krebs cycle (or citric acid cycle), and oxidative phosphorylation (electron transport chain).
• 💨 Glycolysis occurs in the cytoplasm and breaks down glucose into pyruvate, producing a small amount of ATP and NADH.
• 🍋 The Krebs cycle takes place in the mitochondrial matrix, further oxidizing pyruvate and producing more NADH, FADH2, and some ATP.
• ⚡ Oxidative phosphorylation occurs in the inner mitochondrial membrane, where electrons from NADH and FADH2 are passed along an electron transport chain, ultimately leading to the production of a large amount of ATP.
• ☀️ Photosynthesis, primarily in plants, uses sunlight to convert carbon dioxide and water into glucose and oxygen. This glucose is then used in cellular respiration.
• 💪 ATP is the cell's "energy currency." It's a molecule that carries energy within cells for metabolic processes. Its hydrolysis (ATP → ADP + Pi) releases energy.

🧪 Practice Quiz

1. Which of the following is the primary energy currency of the cell?
   1. A. ADP
   2. B. ATP
   3. C. Glucose
2. Where does glycolysis take place in a cell?
   1. A. Nucleus
   2. B. Cytoplasm
   3. C. Mitochondria
3. What are the end products of glycolysis?
   1. A. Pyruvate, ATP, NADH
   2. B. Glucose, ATP, FADH2
   3. C. Carbon Dioxide, Water, ATP
4. In which stage of cellular respiration is the most ATP produced?
   1. A. Glycolysis
   2. B. Krebs Cycle
   3. C. Oxidative Phosphorylation
5. What is the main function of the Krebs cycle?
   1. A. To break down glucose
   2. B. To oxidize pyruvate and produce NADH and FADH2
   3. C. To produce oxygen
6. Which process uses sunlight to create glucose?
   1. A. Cellular Respiration
   2. B. Photosynthesis
   3. C. Fermentation
7. What gas is released during photosynthesis?
   1. A. Carbon Dioxide
   2. B. Oxygen
   3. C. Nitrogen