Ch 3 B Flashcards
What are carbs composed of
C, H, O
- H and Oh usually attached to every curbon
-N= #of carbon atoms
Glucose
6 carbon carb
Most common monosachride
Primary nutrient supplying energy cell
Bound into the polysaccharide glycogen during glycoyenesis
Sugar found in food → make ATP
Where-is excess glucose stored
Liver and skeletal muscle
What does the liver do
Break down glycogen into glucose as needed
Monosaccharides
How are larger carbs formed
Via chemically binding monosachrides.
Disaccharides
2 monosaccharides
Table sugar lactose
Polysaccharides
Many monosaccharides
Glycogen
Starch cellulose
Functions of carbs
-Short-term energy storage
- glycogen to glucose
Neurons and erythrocytes use glucose as their energy source
Cellular respiration
- Exergonic multistep metabolic pathway
- organic molecules = oxidized and disassembled by a series of enzymes
_Potential energy in chem bonds = released - energy used to make ATP (endorgonic)
- oxygen = required
Glucose oxidation
- Step by step breakdown of glucose W energy release
- Carbon dioxide and water formed
Substrate- level phosphorylation
Direct synthesis of ATP
Oxidative phosphorylation
Energy is transferred to form ATP
Glycolysis steps
-Aerobic cellular respiration
-Occurs in cytosol
Can occur wo oxygen