ANAT 309 Study Guide - Midterm Guide: Lipid Bilayer, Lipid Metabolism, Glycocalyx
6 Mar 2017
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Lecture 1 & 2: cell structure and function. What are transient structures called in the cytoplasm. Compare and contrast the 3 main membrane proteins. Proteins: >50% (integral proteins, peripheral proteins, membrane carbohydrates. A trilaminar appearance under electron microscopy (due to deposition of reduced. Limits movement of phospholipids, makes membrane more stable. Outer membrane leaflets: makes membrane mechanically more stable. Serves as a protective network (anchoring) to maintain structure. Cytoplasmic (25nm) > mitochondrial (20nm) to make rrna and associated proteins (small electron dense granules = basophilic) Nissl substance/bodies: neurons: free ribosomes: dispersed, polyribosomes: groups along a strand of mrna (may be attached to rer) Lipid metabolism steroid hormone synthesis glycogen breakdown detoxification. Cis = convex = forming transfer vesicles (adjacent to er cisternae (nucleus)) Trans = concave = maturing condensing vacuole (away from nucleus) Concentration and storage of secretory products happen in condensing vacuole. Inner membrane: cristae, semipermeable, atpase activity, etc, ribosomes. Mitochondrial matrix: water, solutes, matrix granules, dna, ribosomes, krebs.
