mercer.joan57
mercer.joan57 Aug 26, 2026 • 20 views

Cellular Respiration & Photosynthesis practice problems (9th grade)

Hey there! 👋 Feeling a bit lost with cellular respiration and photosynthesis? No worries, I've got you covered! This worksheet will help you nail those concepts with some fun practice problems. Let's get started! 🌿
🧬 Biology
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brandon741 Dec 26, 2025

📚 Topic Summary

Cellular respiration and photosynthesis are two key processes for life on Earth. Think of photosynthesis as plants' way of making their own food using sunlight, water, and carbon dioxide. It's how they create glucose (sugar) and release oxygen into the air. Cellular respiration is like the reverse: all living things (including plants!) break down glucose using oxygen to release energy for their activities, producing carbon dioxide and water as byproducts. These two processes are interconnected, forming a cycle that sustains life! 🔄

🧪 Part A: Vocabulary

Match the terms with their definitions:

Term Definition
1. Photosynthesis A. Process that breaks down glucose to release energy
2. Cellular Respiration B. Energy currency of the cell
3. Glucose C. Process using sunlight to make food
4. ATP D. A sugar that is a major source of energy for cells.
5. Chlorophyll E. Green pigment in plants that absorbs light energy used to carry out photosynthesis

Match the term to the definition. For example: 1-C, 2-A, etc.

🌱 Part B: Fill in the Blanks

Complete the paragraph using the words: oxygen, carbon dioxide, sunlight, glucose, energy.

Plants use __________ to perform photosynthesis. During this process, they absorb __________ and water to create __________. They then release __________ into the atmosphere. Cellular respiration uses __________ to break down glucose and release __________.

🤔 Part C: Critical Thinking

Explain how cellular respiration and photosynthesis are related. Give at least two examples.

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