Organisation: several tissues can form one organ
| English | 中文 | Pinyin |
|---|---|---|
| tissue/ˈtɪʃuː/ | 组织 | zǔ zhī |
| organ system/ˈɔːɡən ˈsɪstəm/ | 器官系统 | qì guān xì tǒng |
What would explain this observation?
- The stomach contains several tissue 组织 types working together. Calling it a tissue misses the way its different parts cooperate.
- Start with a prediction. State the quantities or features you would compare, then decide what evidence could distinguish two explanations.
Build the model
- Cells are the basic building blocks of living organisms. A tissue is a group of cells with similar structure and function. An organ contains different tissues performing a specific function. Organs work together in organ systems 器官系统, and those systems cooperate in the whole organism.
- tissue: A group of cells with similar structure and function; organ system: A group of organs working together.
Which level contains several tissues working together for a function?
In the digestive system, organs including the stomach and small intestine work together to digest and absorb food. Within an organ, muscle tissue can move contents while glandular tissue releases substances. A list of levels becomes an explanation when each example is placed at the correct level.
Match each technical term to its precise meaning.
Use the definitions to distinguish related quantities and processes.
Choose evidence that can test it
- In the digestive system, organs including the stomach and small intestine work together to digest and absorb food. Within an organ, muscle tissue can move contents while glandular tissue releases substances. A list of levels becomes an explanation when each example is placed at the correct level.
- Use a provided organ description to classify its components. Compare the scale of a cell image with an organ image using their own scale bars; do not compare raw displayed widths. Build a chain using the same organism and explain the role of each level.
Which two habits make the investigation or model in this case more defensible?
Use a provided organ description to classify its components. Compare the scale of a cell image with an organ image using their own scale bars; do not compare raw displayed widths. Build a chain using the same organism and explain the role of each level.
Work from known quantities
- State the known values and their units. Choose the relation because its assumptions fit this case, then rearrange before substitution.
- Known: a model cell is 0.02 mm wide, while a tissue strip is 2 mm wide. Length ratio =2/0.02=100. This is a scale comparison, not a claim that the tissue contains exactly 100 cells: their arrangement and third dimension have not been specified.
A 3 mm tissue strip is compared with a 0.03 mm cell. Calculate their length ratio. Use the same sequence: known quantities → model → relation → substitution → unit and interpretation.
A 3 mm tissue strip is compared with a 0.03 mm cell. Calculate their length ratio.
The result is 100 . Known: a model cell is 0.02 mm wide, while a tissue strip is 2 mm wide. Length ratio =2/0.02=100. This is a scale comparison, not a claim that the tissue contains exactly 100 cells: their arrangement and third dimension have not been specified.
Check the conclusion and its limits
- An organ is not necessarily made from one tissue type. A named blood vessel is an organ structure, while blood is a tissue. Real organ boundaries and cooperating systems can overlap in function without changing the meaning of the hierarchy.
- Return to the original observation. Explain what the result supports, which conditions it assumes, and one way to test a competing explanation.
Every organ consists of only one type of tissue. This claim is false: An organ is not necessarily made from one tissue type. A named blood vessel is an organ structure, while blood is a tissue. Real organ boundaries and cooperating systems can overlap in function without changing the meaning of the hierarchy.
Organisation: several tissues can form one organ: In the digestive system, organs including the stomach and small intestine work together to digest and absorb food. Within an organ, muscle tissue can move contents while glandular tissue releases substances. A list of levels becomes an explanation when each example is placed at the correct level.
Every organ consists of only one type of tissue.
An organ is not necessarily made from one tissue type. A named blood vessel is an organ structure, while blood is a tissue. Real organ boundaries and cooperating systems can overlap in function without changing the meaning of the hierarchy.
A group of cells with similar structure and function: write the technical term.
tissue means A group of cells with similar structure and function.