KREBS CYCLE & ELECTRON TRANSPORT Chapter 9-2 http://www.clickatutor.com/mitochondria.jpg http://www.therunningdoctor.com/runinjuries.htm

CARBOHYDRATES SUPPLY ENERGY Remember ! CARBOHYDRATES SUPPLY ENERGY Cells burn GLUCOSE for their energy needs Images from: http://www.miranda.com/library.en/Images/Pictures/girls-runners.jpg http://www.estrellamountain.edu/faculty/farabee/biobk/BioBookCHEM2.html

EXERCISE and ENERGY ________term exercise like 50 yd dash http://www.therunningdoctor.com/runinjuries.htm EXERCISE and ENERGY ________term exercise like 50 yd dash Cells keep only enough ATP for a few Seconds of activity. Once this ATP is used up muscle cells can use _____________ fermentation for about ______________ of energy.

EXERCISE and ENERGY Once race is over, _______________ must be broken down using oxygen. A quick sprint builds up an OXYGEN debt that must be repaid by ______________________ Image from: http://www.miranda.com/library.en/Images/Pictures/girls-runners.jpg

LONGER EXERCISE and ENERGY For exercise longer than 90 seconds _____________________ is the only way to make enough ATP. Cellular respiration gets ___________ from glucose than fermentation. Well conditioned athletes must pace themselves during a long race.

What happens in a long race when the body’s glucose all is used up? Animal cells store GLUCOSE as _____________ to use later. REMEMBER Image from: http://www.msu.edu/course/lbs/145/smith/s02/graphics/campbell_5.6.gif

EXERCISE and ENERGY (LONGER term energy) ________________ store glucose as ________________ which can be broken down into glucose to supply energy for_______________ of activity.

DID YOU EVER CARBO LOAD? Eating a high carbohydrate meal before a big game or race fills up your _____________ reserves in your muscles http://www.nutritionclipart.com/details/illustration/179_fat_woman_eating_spaghetti_at_a_table.html

That’s why aerobic exercise must continue for longer than EXERCISE and ENERGY (LONGER term energy) After glycogen stores are used up the body begins to break down ________ That’s why aerobic exercise must continue for longer than 20 minutes if you want to lose weight! Image from: http://blackmovie.us/movie/Fat.Albert/fat.albert.movie.jpg