The document discusses the basic characteristics and components of cells. It explains that cells are the smallest and most basic unit of life, and that there are two main types of cells - eukaryotic and prokaryotic. The document also outlines the key processes and structures that allow cells to survive, including obtaining energy and materials through diffusion, osmosis, and active transport, and the ability to reproduce through cell division.

1. CELLS

2. CELLS

3. COMMON CHARACTERISTICS The smallest particle of a living thing Can move Perform complex activities Grow and develop Respond and adapt to their environment All reproduce

4. TWO KINDS OF CELLS Eukaryotic Animal Cells Plant Cells Prokaryotic Bacteria

5. TO SURVIVE, THEY NEED Energy Food and Water Oxygen Living space Ability to maintain a constant temperature Cold blooded Warm blooded

6. SPONTANEOUS GENERATION When people thought animals could just spring to life from non-living things Francesco Redi

7. CELL THEORY The 4 Basic Components of the Cell: 1. All organisms are composed of one or more cells. 2. The cell is the basic unit of life in all living things. 3. All cells are produced by the division of preexisting cells. 4. Cell activity depends on the activities of sub-cellular structures within the cell(organelles, nucleus, plasma membrane)

8. CHEMISTRY OF LIVING THINGS

9. NON-LIVING MATTER Smallest substance of non-living things? Elements / Atoms Combinations of elements? Compounds

10. ORGANIC/INORGANIC Organic substances Composed of compounds that include carbon Inorganic substances Composed of compounds that do not include carbon

11. ORGANIC COMPOUNDS Some compounds are essential to basic life Carbohydrates Fats and oils Proteins Enzymes Nucleic acids (DNA)

12. TRANSFER OF SUBSTANCES Diffusion Osmosis Active Transport

13. DIFFUSION Diffusion: where substances move from a higher concentration to a lower concentration Not always in a cell The cell membrane is selectively permeable …it permits only certain substances (oxygen, water and food molecules) to diffuse into the cell

14. OSMOSIS Diffusion involving the most important component of a cell WATER Click the image to watch a short animation.

15. ACTIVE TRANSPORT Using some of the cell’s energy to “carry” substances in or out of the cell The cell DOESN’T do it on its own Need ENERGY Click the image to watch a short animation.

16. CELL DIVISION A process a cell goes through when splitting into two daughter cells (cells that are genetically the same as itself) Process is called Mitosis Click the image to watch a short animation.