Unit 3 Metabolism Part 2
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where does the body store ATP
tissue
where doe the body store carbohydrate
muscle glycogen - 4th most serum glucose liver glycogen
where does the body store fat
ADIPOSE tissue - MOST ENERGY STORED HERE muscle triglycerides - 3rd most serum triglycerides
where does the body store protein
muscles - 2nd most
where are lipids stored
triglycerides
what are the types of lipids
triglycerides phospholipids fatty acids steroids fat soluble vitamins lipoproteins
triglycerides
glycerol backbone and 3 fatty acids
phospholipids form
plasma membranes
lipoproteins
transport lipids through blood plasma
what are common lipid properties
nonpolar hydrophobic
where are lipoproteins produces
intestine and liver
what is the job of lipoproteins
combine with lipids and transport them so that they can pass through the plasma membrane that is made up of 90% water
What are the good task lipoproteins
• chylomicrons and HDLs
what are the bad task lipoproteins
• VLDLs and LDLs
chylomicrons
• transport dietary lipids to adipose tissue
High density lipoproteins (HDLs)
remove excess cholesterol from cells and transport to liver for elimination - want HDLs high so that total cholesterol can be lowered faster
very low density lipoproteins (VLDLs)
transport triglycerides from hepatocytes in the liver to adipocytes in fat - anaerobic and want low/bad for heart
low density lipoproteins (LDLs)
carry out 75% of bloods cholesterol and delivers it to cells - AEROBIC- want to be low
What do HDLs help solve
the problems that LDLs bring
how do we produce ATP from lipids
OXIDATION only with oxygen present
if the body does not need lipids where are they stored
adipose tissue
Lipid CATABOLISM
AKA LIPOLYSIS - the splitting of triglycerides into a glycerol backbone and 3 fatty acids
what stimulates lipolysis
stress hormones- epeine, norepi, and cortisol
what is step 1 of lipolysis
Triglyceride hydrolysis - triglyceride spilt into 3 fatty acids and glycerol