Week 3 Study Worksheet

Week 3 Study Worksheet - Week 3 Study Worksheet + Key terms...

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Week 3 Study Worksheet + Key terms 1. Describe the “endosymbiotic theory.” Mitochondria and chloroplasts of eukaryotes resemble prokaryotes. So it is believed that a eukaryote consumed a prokaryote without eliminating it. Genomes of the prokaryote made its way to the nucleus of the eukaryote. 2. Describe several unique properties of mitochondria and chloroplasts. Synthesize ATP Contain internal membranes Contain DNA, RNA, and ribosomes (can synthesize some of their own proteins) Circular DNA 3. Describe the “fluid mosaic model.” Membranes are made of a fluid bilayer of lipids with a mosaic of associated proteins that are either integral or peripheral parts of the membrane. 4. What is the difference between integral and peripheral proteins? Intrinsic/integral proteins are proteins in the membrane. They are tightly bound by hydrophobic interactions between the carbohydrate chains of the lipid bilayer. Usually take α-helix conformation and have carbohydrate chains attached to hydrophilic segments on outer membrane surface. Difficult to remove. To remove intrinsic/integral, one must destroy the membrane. Extrinsic/peripheral proteins are easily removed from the membrane.
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This note was uploaded on 03/18/2011 for the course BIO 1A taught by Professor Schlissel during the Fall '08 term at Berkeley.

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Week 3 Study Worksheet - Week 3 Study Worksheet + Key terms...

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