To draw the three types of cells—cheek cells, red blood cells, and Elodea cells—follow these steps:
1. Cheek Cell
Start by drawing a large, irregular shape to represent the cheek cell. Cheek cells are animal cells, so they lack a cell wall. Inside the cell, include a round structure for the nucleus. Draw a thin line around the cell to represent the cell membrane, which encloses the cytoplasm.
2. Red Blood Cell
Next, for the red blood cell, draw a biconcave disc shape which is typical for these cells. This design helps in maximizing surface area for oxygen transport. Again, it will lack a cell wall. The inner part should be left mostly blank to represent the absence of a nucleus in mature red blood cells.
3. Elodea Cell
Finally, for the Elodea cell (a type of plant cell), draw a rectangular shape. This shape is characteristic of plant cells because of the rigid cell wall. Inside the rectangle, place a large, round nucleus. Also, include a clear outer line to represent the cell wall and a thin line for the cell membrane just inside the wall. Remember to depict the chloroplasts as small green oval shapes scattered throughout the cytoplasm.
Labeling the Drawings
Once you’ve drawn each cell, label the following structures for clarity:
- Nucleus – the round structure found in both cheek and Elodea cells.
- Cell Membrane – the thin enclosing layer found in all three types of cells.
- Cell Wall – only present in the Elodea cell, providing structure and support.
- Plant Cell – specifically referring to the Elodea cell as a plant cell in contrast to the animal cells.
By following these guidelines, you will have a clear representation of the three cell types and their basic structures.