7-4 Diversity of Cellular Life

Page 190

A. Unicellular Organisms

• 1. Organisms that are made up of only 1 cell.– Examples: Yeast, Amoeba, Volvox Aureus (Green

Algae

B. Multicellular Organisms

• 1. Organisms made up of many cells.

B. Multicellular Organisms

• 2. All the cells need to have a way of communicating with each other.

B. Multicellular Organisms

• 3. Cell specialization allows cells to develop in different ways to perform different tasks.

C. Levels of Organization

• 1. Cells Tissues Organs Organ Systems

C. Levels of Organization

• 2. Tissues are groups of similar cells that perform a specific function.

C. Levels of Organization

• 3. Many different tissues work together to become organs.

C. Levels of Organization

• 4. A group of organs working together is an organ system.