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Practice Questions: Chemical Energy for Life Processes

Hey there! πŸ‘‹ Ready to dive into the fascinating world of how living things get their energy? This worksheet will help you understand chemical energy and life processes. Let's get started! πŸš€
πŸ”¬ Science

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jared557 Jan 7, 2026

πŸ“š Topic Summary

All living organisms need energy to survive. This energy comes from chemical compounds, primarily through processes like cellular respiration and photosynthesis. Cellular respiration breaks down glucose to release energy, while photosynthesis uses sunlight to create glucose. These processes are essential for powering life functions, from muscle movement to growth and repair. Understanding how organisms obtain and use chemical energy is fundamental to biology. 🌱

πŸ§ͺ Part A: Vocabulary

Match the following terms with their definitions:

Term Definition
1. Cellular Respiration A. The process where plants use sunlight to synthesize foods from carbon dioxide and water.
2. Photosynthesis B. The energy currency of the cell.
3. ATP C. The process by which cells break down glucose to release energy.
4. Glucose D. A simple sugar that serves as a primary source of energy for cells.
5. Metabolism E. The set of chemical processes that occur in an organism to maintain life.

Match the terms with the correct definition.

🧠 Part B: Fill in the Blanks

Fill in the blanks with the correct words from the list: energy, ATP, glucose, sunlight, respiration.

Living organisms require ________ to perform various life processes. Plants capture ________ during photosynthesis to produce ________, which is then used by both plants and animals. The process of cellular ________ releases ________ from food, which is then stored in ________ molecules.

πŸ’‘ Part C: Critical Thinking

Explain how photosynthesis and cellular respiration are interconnected processes. How does the output of one process contribute to the other? Give an example. 🌍

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