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7.33 Balancing Word Equations for Photosynthesis and Cellular Respiration Worksheet

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Worksheet Overview & Skills Covered

Core academic competencies and curriculum alignment

This Grade 7 Science worksheet provides structured practice on 7.33 Balancing Word Equations for Photosynthesis and Cellular Respiration. Students are guided through targeted exercises that build foundational understanding, computational accuracy, and critical thinking skills.

Balancing Word Equations for Photosynthesis and Cellular Respiration - Which balanced equation best represents the described biological process? (NGSS MS‑LS1‑6, MS‑LS1‑7; CCSS MP.4)

Whether you are an educator preparing classroom handouts, a tutor reinforcing weekly topics, or a parent supporting homeschool learning, this printable resource gives students the deliberate practice required to achieve subject fluency and master state standards.

Grade

Grade 7

Subject

Science

Domain

Science Curriculum

Formats

PDF & DOCX

Sample Practice Problems

Preview the types of problems and questions covered in this worksheet

Below are sample questions representative of the exercises included on this worksheet and related 7.33 Balancing Word Equations for Photosynthesis and Cellular Respiration skill assessments:

Problem 1Difficulty: Mastery

A protozoan cell is observed in darkness. Mitochondria release usable energy (ATP) for the cell. The equation must show oxygen as a reactant and energy (ATP) as a product. Which balanced word equation best represents the biological process described?

A5 glucose + 30 oxygen -> 30 carbon dioxide + 30 water + energy (ATP)

B5 glucose + 30 oxygen -> 27 carbon dioxide + 30 water + energy (ATP)

C5 glucose + 28 oxygen -> 30 carbon dioxide + 30 water + energy (ATP)

D5 glucose + 30 oxygen -> 30 carbon dioxide + 30 water

Solution & Explanation:Cellular respiration breaks down glucose using oxygen and releases energy (ATP), producing carbon dioxide and water. The balanced ratio is 1 glucose + 6 oxygen -> 6 CO2 + 6 water + energy. Scaling by 5 gives 5 glucose + 30 oxygen -> 30 CO2 + 30 water + energy (ATP).

Problem 2Difficulty: Mastery

Phytoplankton is observed after the lights come on. A student labels reactants and products on a diagram. The plant is building sugar; it uses 30 carbon dioxide and 30 water molecules for every 5 glucose molecule made. "Which balanced word equation best represents the biological process described?,A. 30 carbon dioxide + 30 water + light energy -> 5 glucose + 30 oxygen | B. 30 carbon dioxide + 24 water + light energy -> 5 glucose + 30 oxygen | C. 30 carbon dioxide + 30 water -> 5 glucose + 30 oxygen + light energy | D. 30 carbon dioxide + 30 water + light energy -> 5 glucose + 15 oxygen,A,Photosynthesis uses carbon dioxide and water (plus light energy) to make glucose and oxygen. The balanced ratio is 6 CO2 + 6 water -> 1 glucose + 6 oxygen. Scaling that ratio by 5 gives 30 CO2 + 30 water + light energy -> 5 glucose + 30 oxygen.,NO,,,,,online_practice_skill_page,practice,Balancing Word Equations for Photosynthesis and Cellular Respiration practice questions for Grade 7 science,Grade 7 science balancing word equations for photosynthesis and cellular respiration online practice | SCI.7.33 practice questions | matter and energy in organisms review questions | balancing word equations for photosynthesis and cellular respiration with explanations,Grade 7 Science Practice: Balancing Word Equations for Photosynthesis and Cellular Respiration,Balancing Word Equations for Photosynthesis and Cellular Respiration,Photosynthesis and Cellular Respiration Word Equations | Grade 7,Grade 7 science online practice for balancing word equations for photosynthesis and cellular respiration with multiple-choice questions and clear explanations.,balancing-word-equations-for-photosynthesis-and-cellular-respiration-practice-questions,/grade-7/science/sci-7-33/balancing-word-equations-for-photosynthesis-and-cellular-respiration-practice-questions/,Grade 7 Science — Matter and Energy in Organisms Online Practice,Measuring Energy in Food | Conservation of Matter in Organisms | Quantitative Analysis of Energy Flow | Evidence of Chemical Reactions and Conservation of Atoms,sci-7-33,,/grade-7/science/sci-7-34/measuring-energy-in-food-practice-questions/ | /grade-7/science/sci-7-32/conservation-of-matter-in-organisms-practice-questions/ | /grade-7/science/sci-7-35/quantitative-analysis-of-energy-flow-practice-questions/ | /grade-7/science/sci-7-77/evidence-of-chemical-reactions-and-conservation-of-atoms-practice-questions/,/grade-7/,/grade-7/science/,/grade-7/science/matter-and-energy-in-organisms/,/grade-7/science/sci-7-33/,Home::/ > Grade 7::/grade-7/ > Science::/grade-7/science/ > Matter and Energy in Organisms::/grade-7/science/matter-and-energy-in-organisms/ > SCI.7.33::/grade-7/science/sci-7-33/ > Balancing Word Equations for Photosynthesis and Cellular Respiration::/grade-7/science/sci-7-33/balancing-word-equations-for-photosynthesis-and-cellular-respiration-practice-questions/,BreadcrumbList|FAQPage,index

Solution & Explanation:and skill-specific checking.,Use this page for bell work

Problem 3Difficulty: Mastery

A mushroom cell is observed in darkness. Oxygen is taken in to help break down glucose. In a sealed chamber, oxygen drops by 30 molecules and water increases by 30 molecules as glucose is used. Which balanced word equation best represents the biological process described?

A5 glucose + 30 oxygen -> 30 carbon dioxide + 30 water + energy (ATP)

B30 carbon dioxide + 30 water + light energy -> 5 glucose + 30 oxygen

C5 glucose + 30 oxygen -> 27 carbon dioxide + 30 water + energy (ATP)

D5 glucose + 15 oxygen -> 30 carbon dioxide + 30 water + energy (ATP)

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QWhat grade level and standards does this worksheet align with?

This worksheet is designed specifically for Grade 7 Science students. It aligns with educational standard SCI.7.33 (Grade 7 science practice focused on balancing word equations for photosynthesis and cellular respiration.).