Cellular Connections: Analyzing Our Observations

Onion Epidermis: In your drawing, the "bricks" were tightly packed together. What might be one reason why the cells in the onion skin are arranged in this way? Think about the job of the onion skin.

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NGSS.MS-LS1-2

Onion Root Tip: You may have drawn some darker, round areas (nuclei) within the rectangular cells. What is the main job of the nucleus in a cell?

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NGSS.MS-LS1-2

Amoeba: Your drawing likely showed an irregular, changing shape. How might this changing shape help the amoeba survive?

Paramecium: If you drew tiny hairs (cilia) on the outside of the oval shape, what do you think these structures might help the paramecium do?

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NGSS.MS-LS1-2

Human Skeletal Muscle Tissue: Your drawing showed long, thread-like structures. How does this shape help your muscles do their job of moving your body?

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NGSS.HS-LS1-1

Human Blood Smear: You drew many small, round shapes. What is one important job of these cells in your body?

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NGSS.MS-LS1-2

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Which of the specimens you drew seemed to be made up of many cells working together? List them.

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NGSS.MS-LS1-1

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Which of the specimens you drew appeared to be a single, independent cell? List them.

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NGSS.MS-LS1-1

How was the overall arrangement of cells in the onion specimens (epidermis and root tip) different from the arrangement of cells in the human blood smear?

Imagine you are looking at a specimen under high power, and it appears blurry. What two parts of the microscope could you adjust to try and make the image clearer?