Last updated: October 10, 2026
Grade 8 Cellular Respiration worksheets, ready for class.
Drop this week on the board. Print the cellular respiration worksheet you need.
Free preview · Print the worksheet · No credit card · About 20 seconds
Grade 8 cellular respiration worksheets
Skills covered
- Food → energy (ATP) in cells
- Oxygen in, carbon dioxide out
- Mitochondria as the site
- How this pairs with photosynthesis
Sample questions and answer key
1. What is the main job of cellular respiration?
Answer: Release energy from food (glucose) and store it as ATP.
2. Which organelle does most of this in eukaryotic cells?
Answer: Mitochondria.
3. What gas do animals take in for respiration, and what gas do they give off?
Answer: Oxygen in, carbon dioxide out.
4. How is this the opposite of photosynthesis in a simple classroom model?
Answer: Photosynthesis stores energy and makes glucose/O₂; respiration releases energy and makes CO₂/H₂O.
Teaching notes
Grade 8 does not need the Krebs cycle by name. Equation in words is enough: glucose + oxygen → carbon dioxide + water + energy.
Related pages
About this page
Grade 8 cellular respiration worksheets stay on the word equation, mitochondria, and the link to photosynthesis. Save glycolysis detail for high school.
Print the samples or generate a PDF. Homeostasis (Grade 10) is the related high-school page if you teach both courses.
Standards alignment
What this cellular respiration biology content covers
Worksheets are mapped to the following published standards. Pick a standard to focus your worksheet on the matching skill.
- NGSS
MS-LS1-7Grades 6–8
Develop a model to describe how food is rearranged through chemical reactions forming new molecules that support growth and/or release energy.
Frequently asked questions
Is this the same as breathing?
How it works
Three steps from Sunday prep to cellular respiration worksheets for Grade 8 on the lesson.
Drop this week on the board
Your classes, Monday through Friday. Missing work shows up in amber.
Make what you print
Worksheets, slides, quizzes, and keys, saved on the lesson.
Walk in ready
Print, present, or share. Sunday is yours again.
Explore more worksheets
Browse by subject, topic, or grade level.