Biology and Human Concerns
                                Notes 10-09-09

Exam 4M47 October 19th 6 PM– class same day!

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10 09 09 Notes

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10 09 09 Notes

  1. 1. Biology and Human Concerns Notes 10-09-09 Exam 4M47 October 19th 6 PM– class same day! Nucleus => Contains a eukaryotic cell’s genetic library. Part of DNA molecules Function – to store genetic information -Nucleoplasm -Chromatin -Nucleolus – manufactures ribosomal RNA Ribosomes => make protein. Rough endoplasmic reticulium The Endomembrane System => The endoplasmic reticulum manufactures membranes and performs many other biosynthetic functions. Smooth endoplasmic reticulium => break molecules down Rough endoplasmic reticulium => forms network of tubules, vesicles (Page 60) Golgi apparatus finishes, sorts and ships cell products. Ex. Factory. Fully formed proteins leave the Golgi. These proteins either fuse with the cell wall or become lysosomes. Lysosomes => intracellular digestive system -powerful digestive enzymes inside the cell. If escape lysosome, will destroy the cytoplasm. -lysosomes have the power to fully destroy the cell when needed. Ex. Destroying webbing between fingers of fetus. Vacuole => Diverse functions in cell maintenance -stores water, sugar, etc -also stores waste Size comparison between plant cell and animal cell

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