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Structures and Functions.  Cells work together to form tissues.  Tissues work together to form organs.  Organs work together to form organ systems.

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Presentation on theme: "Structures and Functions.  Cells work together to form tissues.  Tissues work together to form organs.  Organs work together to form organ systems."— Presentation transcript:

1 Structures and Functions

2  Cells work together to form tissues.  Tissues work together to form organs.  Organs work together to form organ systems.  Organ Systems work together to form Organisms.

3  Video Time!!! Video Time!!!

4  Worksheet: ◦ Read the directions and complete the worksheet on cellular organization.

5 Unicellular – organisms that are made of only one cell. Multicellular - organisms that are made of more than one cell.

6  Video Time!!! Video Time!!!

7  Prokaryotic – these are cells that DO NOT have a nucleus. ◦ BACTERIA!!!  Eukaryotic – these are cells that DO have a nucleus. ◦ You!!!

8  Organelles – tiny structures found inside of cells. Can you point out some cell organelles?

9  Nucleus – directs all cell activities.

10  Cell Membrane - protective outer membrane of a cell that allows only certain materials to pass into and out of a cell.

11  Cytoplasm – gel-like material inside the cell membrane and outside the nucleus.

12  Endoplasmic Reticulum - folded membrane that moves materials around in the cell (transportation system).

13  Mitochondria - organelles that break down food and release energy. ◦ The Power House of the cell!

14  Cell Wall – rigid structure made of cellulose that supports and protects the plant cell. ◦ Always found outside of the cell membrane.

15  Chloroplast - organelles in plant cells that change light energy into chemical energy in the form of a sugar. ◦ PHOTOSYNTHESIS!!!

16  Vacuoles - storage tanks for the cell (food, water, and waste).

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