Practice Test

3 parts of cell theory

• all things are composed of cells

• cells are the basic units of structure and function in living things

• new cells are produced from existing cells

5 key historical contributors

• Hooke: discovered cells and named them

• Anton von leveinhooke: discovered bacteria by looking at teeth.

• schliden: discovered all plants have cells

• Shwann: discovered all animals have cells

• Virchow: Proposed the idea that all cells come from existing cells

Learn functions for Organelle, Cell wall, Cell membrane, Cytoplasm, Nucleus, Mitochondria, Chloroplast, and Vacuole

• Cell wall: is a rigid layer that offers structural support and is only found it plants

• Cell membrane: thin flexible layer outside of the cell

• Cytoplasm: gel like substance holds all the organelles and allows proteins to go through the cell

• Nucleus: Gives order to the cell provides instructions and serves as the “blueprint” for the cell

• Mitochondria: Powerhouse, provides the energy for the cell

• Chloroplast: turns sunlight into sugar and has chlorophlly (found only in plants)

• Vacuole: stores water, food and waste