BIOSC-101 Lecture Notes - Lecture 5: Endomembrane System, Chlorophyll, Cellular Respiration
19 Dec 2020
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Document Summary
Describe the structure and function of each of the components of the endomembrane system. In a eukaryotic cell, the double membrane that surrounds the nucleus, perforated with pores that regulate traffic with the cytoplasm. The outer membrane is continuous with the er. Encloses the nucleus, separating its contents from the cytoplasm. Accounts for more than half of the total membrane in many eukaryotic cells. We can think of the golgi as a warehouse for receiving, sorting, shipping, and even some manufacturing. Consists of flattened membranous sacs called cisternae. Sorts and packages materials into transport vesicles. Glycoproteins formed in the er have their carbohydrates modified, first in the er itself, and then as they pass through the golgi. The golgi removes some sugar monomers and substitutes others, producing a large variety of carbohydrates. A membranous sac of hydrolytic enzymes that can digest macromolecules. Lysosomal enzymes work best at acidic ph. Lysosomes carry out intracellular digestion in a variety of circumstances.
