Identify evidence of a living cell
See this course’s project requirements
A labeled cell-function model with membrane transport predictions, cell-type comparisons and an explanation connecting cells to tissues and organs.
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What to include
- Classify supplied living and nonliving observations.
- Label major structures with their distinct functions.
- Compare typical plant, animal and bacterial cells and name an exception.
- Predict two passive-movement directions with permeability assumptions.
- Link cells, tissues and organs and repair the supplied flawed model.
- Include the six changed-case responses with explanations.
Review and revise
Use these criteria to check your work and choose what to improve.
- Method: applies the course-specific rules to the supplied cases with visible intermediate work.
- Accuracy: results agree with the stated facts, units, boundaries and independent checks.
- Reasoning: explains why the result follows and identifies a limitation or unresolved question.
- Transfer: completes changed cases and revises the final project when a relevant assumption changes.
Want more background?
The idea in everyday life
Supplied observation cards: A—yeast has a membrane, DNA, ribosomes and uses sugar during observed growth; B—salt crystal grows by adding dissolved salt and has no cells; C—plastic bead stays the same; D—virus particle contains genetic material but needs a host cell to reproduce. These desk observations are not instructions to culture organisms.
A cell is a bounded system that uses energy, regulates its internal conditions and carries hereditary information. Shape, motion or growth alone cannot establish life: crystals grow and machines move. A dormant cell can remain alive without visible growth.
Identify evidence of a living cell — worked practice
A cell is a bounded system that uses energy, regulates its internal conditions and carries hereditary information. Shape, motion or growth alone cannot establish life: crystals grow and machines move. A dormant cell can remain alive without visible growth.
Supplied observation cards: A—yeast has a membrane, DNA, ribosomes and uses sugar during observed growth; B—salt crystal grows by adding dissolved salt and has no cells; C—plastic bead stays the same; D—virus particle contains genetic material but needs a host cell to reproduce. These desk observations are not instructions to culture organisms.
1. 1. Criteria
List membrane, genetic information and cellular processes as evidence to examine together.
You should see: A has a cellular boundary and machinery; isolated motion is not the criterion.
2. 2. Compare
Separate yeast from the crystal using organization rather than size.
You should see: Yeast is cellular; the crystal is an ordered nonliving material.
3. 3. Qualify
Explain why virus information alone does not establish a living cell.
You should see: D lacks independent cellular machinery; viruses are not cells.
4. 4. Record
Classify all four cards and name a limit of these observations.
You should see: A is cellular life; B and C are nonliving; D is noncellular. No card identifies a disease or establishes safety.
What to finish
Four classified observation cards with evidence and a boundary on the conclusion.
Watch for this
Viruses can contain hereditary material and reproduce through a host. Those facts do not supply their own cellular organization and machinery.
How can I tell I understand it?
Classify a changed observation without equating visible growth with life.
Quick knowledge check
Answer all 3 questions. Get at least 2 right and the lesson completes automatically.
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Answer all 3 questions above and get at least 2 right. You can review the explanations and try again.
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Source & access notes · checked 2026-10-01
Web open/search showed the official page, its topic heading and relevant concept description. This is a content/source check, not a provider endorsement.
Access: Official page retrieved with the web reader on 2026-10-01; interactive tools and videos were not certified by retrieval.
Reuse: Original fictional teaching cases, calculations, questions and examples; link and short factual paraphrase only. No copied source exercises or illustrations.
Source & access notes · checked 2026-10-01
Web open/search showed the official page, its topic heading and relevant concept description. This is a content/source check, not a provider endorsement.
Access: Official page retrieved with the web reader on 2026-10-01; interactive tools and videos were not certified by retrieval.
Reuse: Original fictional teaching cases, calculations, questions and examples; link and short factual paraphrase only. No copied source exercises or illustrations.
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