This key is public by URL. Days 5/10 are first-encounter formative checks only if learners have not used it; adapt cases locally where prior access matters. Record the learner's first explanation and any decoding, scribing, language or biological prompts. Judge accuracy of the biology claim, not the response mode. No score converts to a QCAA Unit 1 assessment result.
| Day | Worked target response | If evidence is missing, next move |
|---|---|---|
| 1 | The unfinished sketch labels a membrane and ribosomes. These fit a cell model; prokaryote/eukaryote remains unresolved because the sketch is incomplete. | Give a new partly labelled box and ask learner to separate “not shown” from “stated absent.” |
| 2 | Both complete comparison models explicitly contain plasma membrane, cytoplasm, DNA and ribosomes. Bacterium DNA is in a nucleoid region without membrane-bound nucleus; leaf-model DNA includes a nucleus. Ribosomes themselves are not membrane-bound. | Point to the four exact phrases in Card D, then ask learner to explain why nucleus is not required for ribosomes. |
| 3 | Pond bacterium is a prokaryotic teaching model because DNA is in a nucleoid and no membrane-bound nucleus is stated; intestinal lining is typical eukaryotic model with nucleus/mitochondria. Both have ribosomes. Unfinished sketch cannot be classified. | Hide the category names, let learner sort nucleus versus nucleoid words, then reveal categories. |
| 4 | Leaf mesophyll model: chloroplasts carry out photosynthesis; large central vacuole helps water balance. Both leaf and intestinal lining models list nucleus and mitochondria (also membrane/ribosomes). Not all plant cells contain chloroplasts. | Ask learner to cross-check a nonphotosynthetic plant-cell possibility; never use “all” from one model. |
| 5 | See full Check A work below. | Re-teach only the failed inference, then use a different local card for a second look. |
| 6 | For this one illustrative exported protein, attached ribosome assembles protein → rough ER processing → Golgi modification/sorting → leaves cell. Golgi is not the structure that directly assembles the amino-acid chain. Other proteins take other routes. | Swap ribosome/Golgi role cards and require an explanation before restoring order. |
| 7 | Lysosome: breakdown/recycling in many animal-cell models. Large plant central vacuole: water balance among varied roles. Smooth ER: lipid synthesis among varied functions and no attached surface ribosomes. Plant lytic vacuoles may perform related breakdown; animal cells can have vacuoles. | Replace an absolute statement with the exact bounded Card C phrase. |
| 8 | Intestinal epithelial cell → epithelial tissue → small intestine → digestive system; cardiac muscle cell → cardiac muscle tissue → heart → circulatory system. Each earlier level contributes; each organ contains multiple tissues. | Give the four level names separately; after ordering, ask what else an organ contains. |
| 9 | “No label” becomes “not shown in the incomplete drawing”; “every plant cell” becomes “photosynthetic plant cells such as this leaf model”; “every protein” becomes “some secreted proteins in the illustrated route.” Cite Cards D/F, C/D and C respectively. | Ask what new evidence would justify a stronger claim; accept “unknown” where appropriate. |
| 10 | See full Check B work below. | Choose the smallest missing link to revisit and then supply a different unseen local example. |
Day 5 Check A · worked first-response key
- J can be classified as a typical eukaryotic model: DNA is enclosed in a membrane-bound nucleus; mitochondria are also explicitly listed. Its yeast label agrees with the classification but the biological features, not its name alone, support it. It is not a claim about all yeast cells or a microscopic observation.
- K cannot be classified from this incomplete sketch. It labels membrane and ribosomes; its blank region gives no negative evidence about nucleus or other structures. A learner may say a complete inventory or further observation is needed.
- Plasma membrane and ribosomes are stated in both. Neither shared feature on its own resolves prokaryotic versus eukaryotic organisation; the membrane-bound nucleus evidence in J does.
- Example limited museum caption: “This unfinished cell diagram labels a membrane and ribosomes; its organisation cannot yet be determined from the omitted labels.” Equivalent precise wording is fine.
Feedback decision: If J is wrongly called prokaryotic, revisit nucleus versus nucleoid with Card B. If K is confidently classified, place “incomplete” across the blank area and ask which missing observation would settle it. If a learner merely repeats “yeast is fungus,” ask for two model features. Keep the first-response snapshot; feedback work is a separate attempt.
Day 10 Check B · worked first-response key
- In L the ribosome attached to rough ER assembles the protein; Golgi apparatus later modifies/sorts many products. Rough ER participates in making/processing many membrane or secreted proteins. One illustrative protein follows the specified sequence; this is not every protein's path.
- Smooth ER lacks attached surface ribosomes in this comparison, unlike rough ER. It participates in lipid synthesis; jobs vary by cell. “Smooth” is appearance in a cell diagram, not a tactile property.
- Ciliated airway epithelial cell → epithelial tissue → trachea → respiratory system. The cell is part of/contributes to the tissue; it alone is not the tissue. The trachea is an organ containing other tissues too.
- Valid limits include: neither fictional card proves a person's diagnosis or health status; neither is a real patient observation; L does not prove all proteins travel via Golgi; M does not imply an organ consists of only one tissue.
Feedback decision: If ribosome and Golgi jobs reverse, have learner point to the explicitly stated word route and explain who assembles versus sorts. If levels reverse, use the four full-word staircase tokens, then ask what the trachea contains besides epithelium. If a learner gives a medical inference, return to the fictional-model label. Offer a fresh locally authored card for any second check.
Support interpretation: A scientifically correct dictated/AAC explanation demonstrates these conceptual targets, even if someone read the card. It does not independently establish literacy. A biological hint or answer supplied by an adult prevents an independent first-response claim; log it and provide instruction.
SubjectNest original worked key © NeuroForgeIO Pty Ltd 2026, CC BY 4.0.