Chapter 5 – The Working Cell. Energy The capacity to do work What is work? Potential Energy Stored energy, eg. in chemical bonds Kinetic Energy Energy of motion What is the Law of Conservation of Energy?. Energy. Adenosine. Adenosine. Phosphate transferred to other molecules.
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Phosphate transferred to other
moleculesATP and Cellular Work
(a) Without enzyme
(b) With enzyme
(c) Enzyme inhibition by a molecule that causes the
active site to change shape
(b) Enzyme inhibition by a substrate imposter
(a) Normal enzyme action
(a) Passive transport of one type of molecule
(b) Passive transport of two types of molecules
(net movement of water)
Water Balance in Cells
e.g. GLUT carriers transport glucose into human cells..
Na/K Pump Animation..
Outside cell are moved from low concentration to high concentration.
(a) ExocytosisBulk Transport
(b) Endocytosis are moved from low concentration to high concentration.
Pseudopod are moved from low concentration to high concentration.
Food being ingested