ENZYMES 2-4 http://www.biologie.uni-hamburg.de/b-online/library/cat-removed/enzyme_.gif.

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Presentation transcript:

ENZYMES 2-4 http://www.biologie.uni-hamburg.de/b-online/library/cat-removed/enzyme_.gif

Chemical reactions need help to get started. Ex: A fire needs a match to get it started. http://www.chuckwagondiner.com/art/matches.jpg http://plato.acadiau.ca/COURSES/comm/g5/Fire_Animation.gif

IT’S LIKE PUSHING A SNOWBALL UP A HILL Once it gets to top . . . it can roll back all by itself http://www.gifs.net

Image from: http://www. hillstrath. on Molecules in living things that help chemical reactions happen are called = _________ Most enzymes are _____________ SEE ANIMATION of AMYLASE More about this in Chapters 7,8,9 and 12

Click the image to play the video segment. Enzymatic Reactions 2D Click the image to play the video segment. Video 4

HOW ENZYMES WORK _______ __________ ____________ __________________ COMPLEX __________ Unchanged & Reusable __________ Image modified from: http://www.biologie.uni-hamburg.de/b-online/library/cat-removed/enzyme_.gif Arrow: http://www.gifanimations.com/action/ImageDisplay/1/2/11/next

Click HERE to learn more about enzymes ENZYMES _____ like a _______________ to only _________of _________. Enzymes are ___________ by the reaction and ___________ http://www.grand-illusions.com/images/articles/toyshop/trick_lock/mainimage.jpg

FACTORS THAT AFFECT ENZYME ACTIVITY __________ & ______________ Conditions that are TOO ACIDIC or TOO HOT cause proteins to ________ or _________ See a movie Choose narrated http://www.desktopfotos.de/Downloads/melt_cd.jpg http://www.nealbrownstudio.com/adm/photo/163_nb_fried_egg.jpg

Denaturing _______ the _______ of the ______________ so enzyme ______________ to ____________ _______________ (keeping pH and temperature constant) is ______________ for maintaining ____________________ Image modified from: http://www.lewport.wnyric.org/jwanamaker/animations/Enzyme%20activity.html

Many enzyme NAMES end in _____ and the beginning of the name tells what it does DNA Polymerase= “polymerizes” joins monomers to make DNA Protease= breaks down proteins ATP synthase= synthesizes ATP

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