Learning Goals:
Studying cells helps us understand how organisms function.
Cellular organelles work together to carry out life functions.
Cellular processes enable organisms to meet their basic needs.
Success Criteria:
I can...
...list out why studying cells is important.
...label organelles on a plant & animal cell diagram.
...indicate the functions of organelles.
...describe diffusion & osmosis and provide examples.
👇👇👇👇👇👇👇👇👇👇👇👇👇👇👇
Why Do Cells Divide?
Cells must divide to make more of themselves, rather than simply growing ever larger
There are two reasons why cell size is limited:
- the
amount of material in a cell increases faster than the cell membrane grows, so
the membrane cannot keep up with the import of nutrients and the export of
waste 🠆 the cell dies 😢
- the amount of material in a cell increases, but the speed of diffusion does not, so the diffusion of nutrients and wastes takes too long 🠆 the cell dies 😢
