1 / 11

ENZYMES

ENZYMES. ENZYME STRUCTURE. ENZYME. Enzymes are proteins that speed up chemical reactions. (catalyst) Enzymes do not change when they perform their function, and can be used over & over again. http://www.biotopics.co.uk/other/anenz.html The shape of an enzyme determines its function

idra
Télécharger la présentation

ENZYMES

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. ENZYMES

  2. ENZYME STRUCTURE

  3. ENZYME • Enzymes are proteins that speed up chemical reactions. (catalyst) • Enzymes do not change when they perform their function, and can be used over & over again. • http://www.biotopics.co.uk/other/anenz.html • The shape of an enzyme determines its function • Their structure can be changed due to environmental factors and made inactive (denatured).

  4. ACTIVATION ENERGY • Enzymes lower activation energy. (the energy required to make a chemical reaction occur). • http://academic.brooklyn.cuny.edu/biology/bio4fv/page/enzyme_e.htm

  5. THEORIES • Lock and Key- One specific enzyme fits into one specific substrate. • http://www.phschool.com/science/biology_place/labbench/lab2/binding.html • Induced fit- the enzyme fits to form the substrate.

  6. ENZYME • Enzymes are very specific, they can only help one reaction. • http://www.lpscience.fatcow.com/jwanamaker/animations/Enzyme%20activity.html • Some enzymes can be used repeatedly on the same set of molecules to build long chains.

  7. FACTORS AFFECTING ENZYMES • Certain enzymes work in a specific pH. • http://www.phschool.com/science/biology_place/labbench/lab2/ph.html

  8. FACTORS Cont… • Enzymes work in specific temperatures. As temperature increases, enzyme activity increases unless it is too high, then it becomes denatured or destroyed.

  9. FACTORS Cont… • Small amounts of enzymes can react to a lot of substrate, but can limit the rate of the reaction, but does not decrease the reaction. • Large amounts of enzymes will increase the reaction. • http://bcs.whfreeman.com/thelifewire/content/chp06/0602001.html

  10. COENZYMES • These are organic substances but not proteins. A coenzyme allows a reaction to take place.

  11. http://highered.mcgraw-hill.com/sites/0072507470/student_view0/chapter25/animation__enzyme_action_and_the_hydrolysis_of_sucrose.htmlhttp://highered.mcgraw-hill.com/sites/0072507470/student_view0/chapter25/animation__enzyme_action_and_the_hydrolysis_of_sucrose.html

More Related