BPK 110 Chapter Notes - Chapter 4: Acetyl-Coa, Beta Oxidation, Cellular Respiration
19 Oct 2019
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■Help cushion internal organs ⇐ ex. Heart, kidney
■Insulation
○W/ weight gain
■Triglyceride = enlarge
●^^ if max size ⇒ divide to form adipocytes ⇐ fat cells ⇐ if weight lost
⇒ adipocytes SHRINK ⇐ != disappear
●Fat ⇐ 9 kilocalories
●Metabolism of fat: ⇐ fat ⇒ ATP/CO2/H2O
○Triglyceride ⇐ broken down into glycerol + 3 fatty acid
○Glycerol ⇒ synthesize glucose/pyruvate ⇐ by aerobic metabolism ⇒ produce ATP
○Beta-oxidation splits off 2 C from long fatty acid ⇒ 2 C molecule ⇒ combine w/
coenzyme A ⇒ produce acetyl coA; remaining fatty acid chain ⇒ Further beta
oxidation ⇒ yield additional acetyl coA
○If enough O and CH20 ⇒ acetyl CoA enters the citric acid cycle ⇒ release 2
molecules of CO2 + high-energy e- ⇐ captured by NADH + H + FAH2
○E- carries enter e- transport chain ⇒ ATP + H2O production
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●Triglycerides
○⇐ used right away as fuel OR ⇐ stored in adipose
■^^ happens continuously throughout the day (store + break down for
energy)
■When energy consume = body energy requirements ⇒ body fat != change
●Storing Triglycerides
○@ adipose ⇐ can store ANY weight
■New fat cells can be made if existing cells reach their max size
●Retrieving energy from fat stores
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