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Met

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S B

on 7 January 2016

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Transcript of Met

TCA Cycle
Oxidative Phosphorylation
Food
Anaerobic
Starvation
Aerobic
ATP
Metabolism
Lipids

Catch all phrase for molecules that are
Hydrocarbon based
Hydrophobic




Protein

Chains of amino acids
1 aa: Peptide
2 aa: Dipeptide
Many aa: Polypeptide
Thousands aa: Protein


20 amino acids. 10 essential


Carbohydrate:

Carbon, Oxygen, Hydrogen
(CH2O)n
n=1: Monosacharide: Glucose, Fructose, Galactose
n=2: Disacharide
n>2: Polysacharide

Lipd Classes

Fatty Acids 3FA’s
Glycerol Triglyceride (Fat)

Non glycerides, eg hormones, cholesterol
Complex Lipid Derivatives, eg glycolipids

BMR: 30 kcal/kg/day

Stressed: 60 kcal/kg/day

Burns: 80 kcal/kg/day

Nutritional Requirements

Measure of Internal Work
Minimal Energy Expenditure

BMR = 30 kcal/kg
Uses 200 – 250 ml/min oxygen

1 calorie: Energy to raise 1g water 1 degree celcius
: 4.184 Joules

1 Food calorie = 1000 calories = 1 kilocalorie

1 kilocalorie = 1 Cal

1 kilocalorie = Energy to raise 1 Kg water 1 degree celcius


Calories

Energy Requirements

Internal Work
External Work
Stored
Lost in Urine
Cori Cycle
Energy
1 NADH - 3 ATP
1 FADH - 2 ATP
CHO: 4 kCal/g

Protein: 4 kCal/g

Lipid: 9 kCal/g
Oxygen
CHO
Protein
TG
Glycerol
FFA
Pyruvate
Lactate
Acetyl CoA
2 NADH
2 ATP
2 NADH
TCA
ATP
3 NADH
FADH2
Ox Phos
Phosphocreatine
Creatine~PO3
Creatine + PO3
ADP
ATP
Stored ATP
2 secs
10 sec
(Anaerobic) Glycolysis
Pyruvate
90 sec
Exercise
Anaerobic
Respiratory Quotient
RQ = CO2 eliminated / O2 consumed
CHO = 1.0
Protien = 0.8 - 0.9
Fat = 0.7
Full transcript