BIO 212 Lecture Notes - Lecture 2: Kinetochore, Complementary Dna, Mitochondrion
11 Jan 2018
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Document Summary
Centrosome and centrioles cytoplasm contains 2 centrioles at right angles; each centriole is composed of. Cytoskeleton proteins organized in fine filaments or slender tubes. Plasma membrane lipid bilayer containing phospholipids, steroids, proteins, and carbohydrates. Cilia are long extensions of the plasma membrane containing microtubules. Contains 9 pairs of microtubules surrounding a central pair (9 + 2 array). The microtubule array similar to that of a centriole. Essential for movement of chromosomes during cell division; organization of microtubules in cytoskeleton. Strength and support; movement of cellular structures and materials. Isolation; protection; sensitivity; support; controls entry and exit of materials. Increase surface area to facilitate absorption of extracellular materials. Proteasomes hollow cylinders of proteolytic enzymes with regulatory proteins at their ends. Breakdown and recycling of damaged or abnormal intracellular proteins. Protein synthesis ribosomes bound to rough endoplasmic reticulum; free ribosomes scattered in cytoplasm. Golgi apparatus stacks of flattened membranes (cisternae) containing chambers.
