Biology 30 - Unit 2 Cells Cells An Introduction. Animal Cell zCells Alive – Interactive Cell yhttp://www.cellsalive.com/cells/cell_model.ht mhttp://www.cellsalive.com/cells/cell_model.ht.

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Presentation transcript:

Biology 30 - Unit 2 Cells Cells An Introduction

Animal Cell zCells Alive – Interactive Cell yhttp:// mhttp:// m

Plant Cell zCells Alive – Interactive Plant Cell yhttp:// mhttp:// m

Similarities and Differences zRefer back to the diagram of a plant and an animal cell in your duotang. zCompare and Contrast:

Cell Info -Cells are made of: -90% Water -10% (includes 50% Protein, 15% CHO, 15% Nucleic Acid, 10% Lipid, 10% other)

Cell Info Continued... -The Elements of a Cell: u60% Hydrogen u25% Oxygen u10% Carbon u5% Nitrogen

What’s in a Gene??  GENOME SIZE: stated as the total number of base pairs  the human genome = 3 billion base pairs zEach DNA Molecule contains many genes (the basic physical and functional unit of heredity). za gene is a sequence of nucleotides bases, who carry the info required for constructing proteins, which carry the structural components of cells, tissue, and enzymes.

The Human Genome has about one hundred thousand genes. human genes vary in length (average size = thousands of bases) humans can synthesize approx different kinds of proteins THE GENETIC CODE: is a series of codons that specify which amino acids are required to make up specific proteins. ythe three billion base pairs are organized into 23 units called chromosomes (1 set of chromosomes comes from each parent - Total of 46 chromosomes) Chromosomal DNA contains an average of 150 million bases

Cell History zPlease refer to the cell history handout in your duotang.

Types of Cells Eukaryotic vs Prokaryotic zEukaryotic  are larger and more complex  have a nuclear membrane  have membrane bound organelles (where isolated biochemical reactions occur)  DNA more complex  Examples: Plant and Animal cells z Cellupedia yDifferent Types of CellsDifferent Types of Cells y- Eukaryotic CellsEukaryotic Cells y- Examples- Examples

Eukaryotic vs Prokaryotic zProkaryotic  smaller simpler  lack nuclear membrane  have no membrane bound organelles  oldest known forms of life  hereditary info is spread throughout the nucleus  reactions occur on the inner membranes  Example: Bacteria, Blue-green Algae z University of Arizona - Prokaryotic Tutorial Info Prokaryotic Tutorial Info z Cellupedia yProkaryotic Images Images

Overview of Cell Structure zCells vary in shape, size and function

Cell Parts: zBasic cell parts include: yCell Membrane: xphospholipid bilayer; xfunction - to hold all contents in place and regulate the movement of molecules in and out of the cell; xreceptor sites located in the membrane control what enters

Cell Parts yCytoplasm: xnutrients are absorbed, transported and processed; xwastes will accumulate here; yNucleus: xcell’s control centre xall info is encoded in the DNA

zVideo of Animal Cells yhttp:// zVideo of Plant Cells yhttp:// zReview Site: yhttp://

Cell Structure Handout: zYou will create a handout that highlights the following parts of the cell. zRough Endoplasmic Reticulum, Smooth Endoplasmic Reticulum, Ribosomes, Chloroplasts, Microtubules (Microfilaments, Cytoskeleton), Mitochondria, Golgi Apparatus, Lysosome, Centriole, Vacuole, Cell Wall, etc. zUse the websites listed online to help you out yBiology in the Classroom: Cells: Cell parts htmBiology in the Classroom: Cells: Cell parts

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