digestion Flashcards
def tissue
a group of cells with similar structure and function
def an organ
a group of different tissues that perform a specific function together
def organ system
a group of organs that work together
def digestive system
organ system in which several organs work together to digest and absorb food
def enzymes
biological catalysts with a specific active site that speed up reactions
def what enzymes do
substrate fits into active site
bind together
quick
products released
what effect does temp have on enzyme activity
increases rate of reaction
at optium fast as possible
after begin to denature
def how enzymes are denatured by temp
high temp causes protien chains to unravel and change shape of active site
def why enzymes have an optium ph
forces holding the protien chains in position are effected by ph
change in ph change in active site
where is amylase
salivary glands small intestine pancreas
def function amylase
break doen starch to glucose
where is protease made
stomach small intestine pancreas
def function protease
break down protien to amino acids
where is lipase made
pancreas and small intestine
def funcion lipase
break down lipids into fatty acids and glycerol
def function digestive enzymes
convert food to small solube molecules that can be absorbed into bloodstream
def products digestion use
build new carbs lipids protiens
def where starch digested
mouth small intestine
def where protien is digested
stomach and small intestine
def where fats digested
small intestine
def why starch not digested in stomach
stomach doesnt produce amylase
conditions in stomach too acidic for it to work
def how mouth break down starch food
teeth break down food
saliva contains amylase
def where bile made
liver
def where bile stored
gall bladder
def bile function
alkaline to neutralise hydrochloric acid from stomach
emulsifies fat to form small drops to increase surface area
increases breakdown of fat by lipase
