Cell Respiration The process by which cells turn food molecules into cell energy.
Energy molecules for cells
description
Transcript of Energy molecules for cells
Energy molecules for cells
SBI 3U
Key terms
• Catalysis: the rate of a chemical reaction is either speeded up or slowed down by a catalyst.
• Metabolism: the sum of all the chemical processes happening in a cell/organism.
• Energy: required to “do work”. Can be converted from one form to another. E.G. Chemical energy in a battery can be converted to electrical energy and then light energy.
All living cells need energy
• All cells need energy to function. • This energy comes from the bonds between
atoms. (E.g. Glucose molecule)• Is stored or released: is in the form of
chemical energy.• Two Types of reactions– Endergonic: energy is taken in (entrance)– Exergonic : energy is given out (exit)
REDOX reactions
• losing and gaining of electrons• Reduction/Oxidation • Reaction in cells is about losing and gaining
electrons.
OILRIG
• Mnemonic (memory tool)• Oxidation is losing electrons (OIL)• Reduction is gaining electrons (RIG)
ATP - Adenosine Triphosphate
NAD - Nicotinamide adenine dinucleotide
• is a coenzyme• Coenzymes are organic
molecules used by enzymes to carry out their functions.
• Act as intermediate carriers of electrons
• NAD+ carries electrons from one reaction to another.