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Cell Structure Observation

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Cell Structure Observation

A science club is comparing plant and animal cells. Use the information on this sheet to identify cell structures and explain what they do. For written answers, use full sentences where asked.

Identify the evidence

Use your knowledge of cell structures to answer Questions 1–4.

1.Which statement best describes a cell?
  • The smallest unit that can carry out life processes
  • A structure found only in plants
  • A non-living part of an organism
  • A group of organs working together
2.Name three structures commonly found in both plant and animal cells.
3.Which two structures in the plant cell are most directly linked to photosynthesis and supporting the cell’s shape? State each structure and its role.
4.A student says, “The cell wall and cell membrane are the same thing.” Explain one difference between their functions.

Match structure to job

Cell structures work together, but each has a particular role.

5.Match each cell structure to its main function.
  • Nucleus
  • Cell membrane
  • Cytoplasm
  • Chloroplast
  • Controls what enters and leaves
  • Site of photosynthesis
  • Controls the cell’s activities
  • Where many cell reactions happen
6.Complete the sentence: In a plant cell, the large contains cell sap and helps keep the cell firm.

The microscope challenge

A science club prepares a slide of onion skin. They start on the lowest-power objective lens, focus carefully, and then move to higher power if needed. Their sketch uses clear outlines, labels and a pencil.

7.Why should the club start with the lowest-power objective lens when looking for the onion cells?
8.Why is a pencil a good choice for a scientific cell drawing? Give one reason.
Draw a simple onion cell as it might appear under a microscope. Include a clear outline and label the cell wall, cytoplasm and nucleus. Use single, neat lines; do not shade.

Explain your thinking

Apply what you know about cell structures to these situations.

9.True or false? Animal cells have a cell wall. Correct the statement if it is false.
TrueFalse
10.A plant cell’s chloroplasts are damaged and can no longer work properly. Predict one effect on the plant and explain why.

3 printable pages

  • Cell Structure Observation, page 1 of 3: Identify the evidence

    Page 1

  • Cell Structure Observation, page 2 of 3: Match structure to job, The microscope challenge

    Page 2

  • Cell Structure Observation, page 3 of 3: Explain your thinking

    Page 3

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