1 / 12

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.

helia
Download Presentation

Energy molecules for cells

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Energy molecules for cells SBI 3U

  2. 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.

  3. 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)

  4. REDOX reactions • losing and gaining of electrons • Reduction/Oxidation • Reaction in cells is about losing and gaining electrons.

  5. OILRIG • Mnemonic (memory tool) • Oxidation is losing electrons (OIL) • Reduction is gaining electrons (RIG)

  6. ATP - Adenosine Triphosphate

  7. 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.

More Related