2Cell Theory 1. All living things are composed of one or more cells. A drawing of cork seen through a microscope by Robert Hooke.
3Single-Celled Organisms Single-celled organisms include bacteria and protists like amoebae.
4Animal CellsMulti-celled animals are made up of many different kinds of specialized cells.
5Plant CellsPlants are similarly made up of different types of cells. There are differences between plant cells and animal cells. For example, plant cells have structural cell walls.The green colour comes from chloroplasts.
6Cell Theory2. The cell is the basic unit of structure, function, and organization in all organisms.
7Cell ActivityCells take in nutrients from their environment and release waste products to their environment through the cell membrane.
8Cell ActivityCell activity is regulated by the cell nucleus.nucleus
9Cell ActivityThe activity of an organism is the result of the activity of its independent cells.
10Cell Theory3. All cells come from pre-existing, living cells.
11MitosisCells divide to make copies of themselves.
12Your TaskPrepare wet mount slides to observe plant (onion) and animal (human cheek) cells under the microscope.These are cheek cells.These are air bubbles.