Unit 2 Part 1 test November 18 – Gold November 19 - Purple

Ability to move Ability to grow Ability to respond to stimuli Ability to reproduce Able to use energy Made up of cells Different levels of organization

All living things are made up of cells Cells are the basic unit of structure and function in living things. Living cells come only from other living cells.

ScientistWhat they did for the cell theory Robert HookeDiscovered honeycomb like structures in cork slice, saw cell wall. Coined the term “cell” Anton van LeeuwenhoekDiscovered protozoa and bacteria after examining pond water Robert BrownDiscovered nucleus in plant cells Theodor SchwannConcluded all living things are made of cells both plant and animal Rudolf VirchowAdded third part to cell theory “cells develop only from existing cells”

Unicellular – Amoeba – Euglena – Paramecium – Bacteria Multicellular – Hydra – Rotifer – Daphnia – Water Bear – Pollen and Petal – Leaf, Stem, Root Cell – Bone and Muscle Cell – Skin and Brain Cell

Prokaryotic – Does not contain a nucleus – Smaller Eukaryotic – Does contain a nucleus – larger

Cells have specialized functions Bone cells are specific to the bone, muscle cells are specific to muscles.

1.Carbon 2.Hydrogen 3.Oxygen

Cells are much larger than atoms Not all cells are microscopic. – Pollen and Petal – Leaf, Stem, Root Cell – Brain and Muscle Cell – Skin and Bone Cell