Biochemistry 3381A Study Guide - Quiz Guide: Hsp70, Transmembrane Protein, Active Transport
27 May 2020
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Document Summary
Functionally specialised areas created by membrane bound organelles within the cell where certain component of cell are concentrated in these areas compared to cytosol. So proteins need to move between cellular compartments. Abundance and shape of membrane-enclosed organelles are regulated to meet the needs of the cell. Their distribution in cell depends on their interactions with cytoskeleton. When cells divide they incorporate new molecules into the existing organelles, enlarged organelles then divide and are distributed to the two daughter cells. Inheritance is important as cell membranes with their specific proteins can"t be made from scratch. E. r give rise to vesicles, which is not done during cell division. Plasma membrane in prokaryotes performs all the membrane related functions like atp synthesis as no internal membranes. In eukaryotes are much larger in size abundance of membranes is an adaptation to increase efficiency. Mitochondria and chloroplasts have double membrane as by phagocytosis they received plasma membrane as one of their layers.
