Most general functions of membranes
Function of separation- defines boundary of cell.
Everything inside is part of the cell, everything outside is
Ex: mitochondria proton gradients- creating a
gradient across a membran
Alberts Johnson Lewis Raff Roberts Walter
Molecular Biology of the Cell
Copyright Garland Science 2008
Figure 18-1 Molecular Biology of the Cell ( Garland Science 2008)
Figure 18-2 Molecular Biology of the Cell ( Garland
Bio 445: Cell Physiology: 9/23/13 (M)
o Schwann cells peripheral, nervous systems.
o Oligodendrocytes brain
o Idea is the same -> axon wrap it arnd (jelly roll idea).
Saltatory (to leak) conduction: Looks like its leaki
Cell Physiology: 8/26/13 (M)
DNA -> RNA -> Protein
2004 Completed human genome
8% still NOT sequenced (sig amt)
Why is it not available?
o Tied up as heterochromatin and no access to it
genes do we
Bio 445 Cell Physiology 9/9/13
Regulation of enzymes: Exam ? name another 3 ways we can control enzymes?
1. Synthesis & degradation of enzyme:
2. Synthesis, degradation, and transport of substrate:
Michealis-Menton idea no substrate, therefore no use.
Bio 445: Cell Physiology: 8/28/13 (W)
Water: F 2-2
Do we need water for life?
o No, Tartigrades & Artemia (Sea Monkeys)
Trehalose Sugar used to survive w/o water
Humans have disaccharides of glucose, but cant dehydrate and use
How many ions d