Lecture 30 Unit 4 Flashcards
what do catabolic reactions do
break down complex organic compounds providing energy
what do anabolic reactions do
synthesize complex molecules from small molecules requiring energy
what does exchange of energy require
ATP
how is half of the energy released from ATP lost
as heat
how many ATP molecules does one cell have
1 billion
where is energy found
in bonds between atoms
what is oxidation
a decrease in the energy content of a molecule. electrons are lost, plus H+
what is reduction
the increase in the energy content of a molecule. electrons gained, plus H+
oxidation- reduction reactions are always ____ in the body
coupled
what is an intermediate molecule involved in electron transfer called
coenzyme
what are examples of coenzymes
NAD+ and FADH
what are the 4 steps of glucose catabolism
- glycolysis
- formation of acetyl coenzyme A
- Krebs cycle
- electron transport chain
what is the glucose metabolism formula
1 glucose +6 O2 –> 6 CO2 + 6 H2O + energy (36-39 ATP)
where do acetyl Co-A and Krebs cycle happen
in mitochondria
