MS-LS1-7 | Cellular Respiration · NYS standard · Grade 8 test questions
Develop a model to describe how food molecules are rearranged through chemical reactions to release energy during cellular respiration and/or form new molecules that support growth as this matter moves through an organism.
Clarification statement: Emphasis is on describing that molecules are broken apart and put back together and that in this process, energy is released.
Assessment boundary: Assessment does not include details of the chemical reactions for respiration or synthesis.
Grade 8 Science Test Questions
Released New York State Grade 8 science test questions that assess MS-LS1-7 are listed here by test and question cluster. Each link opens the question with its answer key.
| Exam | Cluster | Question |
|---|---|---|
| Spring 2025 Grade 8 Test | Organ Systems and Responses | Question 22 |
| Spring 2024 Grade 8 Test | Respiration | Question 39 |
Vocabulary
Terms from the Middle School Science Glossary that come from this standard or from the released Grade 8 Science Test questions that assess it.
- animal
- carbon
- carbon dioxide
- cellular respiration
- chemical reaction
- complex molecule
- energy
- evidence
- food molecule
- growth
- matter
- model
- molecule
- new molecule
- organism
- oxygen
- plant
- rearrange
- release energy
- stored energy
- body system – Spring 2025
- carbohydrate – Spring 2024
- carbon-based molecule – Spring 2024
- cell – Spring 2025, Spring 2024
- chemical formula – Spring 2025
- circulatory system – Spring 2025
- digestive system – Spring 2025
- food – Spring 2024
- reactant – Spring 2025
- respiration – Spring 2024
Performance Level Descriptions
Every Grade 8 Science Test question on MS-LS1-7 is written to match one of the performance level descriptions (PLDs) below.
Resources
Examples and discussion of resources for the learning, teaching, and assessment of MS-LS1-7.
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NGSS Dimensions
Performance expectation MS-LS1-7 was developed using the following elements from the NRC document A Framework for K-12 Science Education:
- Developing and Using Models
- Develop a model to describe unobservable mechanisms.
- LS1.C: Organization for Matter and Energy Flow in Organisms
- Within individual organisms, food moves through a series of chemical reactions in which it is broken down and rearranged to form new molecules, to support growth, or to release energy.
- PS3.D: Energy in Chemical Processes and Everyday Life
- Cellular respiration in plants and animals involves chemical reactions with oxygen that release stored energy. In these processes, complex molecules containing carbon react with oxygen to produce carbon dioxide and other materials. (secondary to MS-LS1-7)
- Energy and Matter
- Matter is conserved because atoms are conserved in physical and chemical processes.