Cellular Respiration Flashcards
Cellular respiration?
Release of energy from fuel molecules
What is energy stored in?
ATP
Where does aerobic respiration occur & what does it need?
In mitochondria & cytoplasm of living cells
Needs oxygen
3 phases to anaerobic respiration
Glycolysis
Krebs cycle
Oxidative phosphorylation
What happens in glycolysis?
Glucose (C6H12O6) is broken down into pyruvic acid (phosphorylation) & ATP is given off in the process
What happens in krebs cycle ?
Pyruvic acid is broken down into:
CO2
H+
Pyruvate
What happens oxidative phosphorylation?
NADH is the first hydrogen acceptor. Energized hyrdrogens are passed from one hydrogen acceptor to another - as they do this they give off ATP. Finally at the end after the hydrogen having lost most of its energy it combines with oxygen to form water.
ADP?
Energise a phosphate to form ATP
Is respiration an anabolic or catabolic process?
Catabolic
Where does cellular respiration occur?
Mitochondria
What is then result of anaerobic respiration in muscles ?
Lactic acid fermentation
How is lactic acid formed ?
How can it be broken down?
Formed during glycolysis when pyruvic acid is formed.
It can be broken down by oxygen to form carbon dioxide & water
