The Great Diversity of Life

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Presentation transcript:

The Great Diversity of Life Unit 3: Cells Chapter 7: Cell Structure and Function Section 7-4: The Diversity of Cellular Life Text pages: 190-193

Vocabulary Cell specialization Tissue Organ Organ system

4 Levels of Organization Cells (muscle cells) Tissue (smooth muscle tissue) Organ (stomach) Organ System (digestive system)

Life surrounds every corner of the planet. Below the earth Deep under the sea Inside of bodies

REMEMBER… All living things are composed of cells. Cells are the basic living units of all organisms.

Unicellular Organisms Unicellular = single celled organisms Do everything you expect a living thing to do. NUMEROUS- dominate life on earth Examples: yeast, algae cells, bacteria

Multicellular Organisms Many cells Much variety and many types Success depends upon communication Cell specialization: process through which cells within the organism can develop in different ways to perform different tasks.

Red Blood Cell Specialization Transport O2 Contain protein that binds to O2 in the lungs and carries it throughout the body.

Pancreatic Cell Specialization Pancreas produces proteins that make digestion possible. Contains many ribosomes and rough ER where proteins are produced.