cellular respiration occurs in
the mitochondria of cells
cellular respiration process
sugar (glucose) is converted to ATP
glucose+O2+ADP = ATP+CO2+H2O
(ADP is "recharged" into ATP)
ATP vs ADP
ATP: triple P
ADP: double P
3 types of food molecules
Protein, Fat, Carbohydrates
chains of amino acids;
only amino acids are small enough to pass through the digestive tract and into the body
glycerol bonded to 3 fatty acids, high energy, must be broken down into the glycerol before absorption
individual/chains of simple sugar units
simple sugars joined together, found in plants
cannot be broken down in the human body
mouth, pharynx (throat), esophagus, stomach, small/large intestine, rectum
most of digestion occurs in
the small intestine
when do food molecules enter the circulatory system?
after passing through the liver
binge eating, then ridding the body of food
why eating disorders are deadly
no energy for cellular respiration, proteins cannot be produced, heart shrinks
why does the body have so many parts and accessory glands?
because different food molecules require different breakdown steps
blocks cellular respiration and denies brain cells ATP
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