Cell Theory Spontaneous Generation What is spontaneous generation

Cell Theory

Spontaneous Generation What is spontaneous generation? Describe (diagram) Redi’s experiment Describe (diagram) Pasteur’s experiment Write a concluding sentence about spontaneous generation. • http: //www. sumanasinc. com/webcontent/ani mations/content/scientificmethod. html • •

Spontaneous Generation. Francesco Redi 1668

• Pasteur’s Experiment 1862 • http: //bcs. whfreeman. com/thelifewire/conte nt/chp 03/0302003. html

Cell Theory • 1. All organisms are made of one or more cell(s) • 2. Cells are the smallest living unit • 3. All cells come from previously existing cells (spontaneous generation)

Characteristics of Life • Respond to the environment • Exchange energy and materials with the environment • Maintain a constant internal environment (known as homeostasis) • Grow and reproduce • Evolve – over a long period of time organisms adapt to their environment

Organization

Organization

Levels of Organization - Atoms make molecules which are the smallest unit of a substance - Molecules make organelles - Organelles make cells - Cells make tissues - Tissues make organs - Organs make organ systems - Organ systems make organisms

- Organisms make up populations Population: 1 species in a particular area - Population make up communities Communities: different populations in an area - Communities make up Ecosystems - Ecosystems make up the Biosphere

Assignment • Label/Colour Animal Cell Diagram

Organelle Function If the school was a cell ……………. because…… 1. Plasma Membrane 2. Nucleus 3. Ribosomes 4. Endoplasmic Reticulum - RER - SER 5. Golgi Apparatus 6. Lysosomes 7. Vacuoles/Vessicles 8. Mitochondria 9. Cytoskeleton X

The Cell • http: //www. johnkyrk. com/Cell. Index. html

Cellular Components a. vacuole/vescicle: storage of substance b. lysosome: intracellular digestion c. ribosomes: protein synthesis d. Golgi complex: processing, packaging and distributing of proteins • e. cytoplasm: fluid substances that houses organelles • •

• f. nucleus: storage of genetic information • g. nucleolus: aids in protein synthesis • h. nuclear membrane: protects contents of the nucleus • i. cell (plasma membrane): regulation of molecules into and out of cells • j. mitochondria: cellular respiration

• Smooth ER: lipid synthesis • Rough ER: synthesis/modification of proteins • Centriole: involved in cell division (animal cells)

If the School was a Cell…. . What would be the…. . 1. Nucleus? 2. Cell membrane? 3. Golgi apparatus? 4. Vacuoles? 5. Lysosomes? 6. Mitochondria? 7. Cytoskeleton?