Cellular Respiration Flashcards
Does cellular respiration only occur in Mitochondria
No, cellular respiration doesn’t only occur in mitochondria.
It also occurs in the cytoplasm and on plasma membrane of prokaryotes
Glycolysis
Breakdown of glucose to produce energy.
It just occurs in the cytosol.
How does Cellular respiration occur
This take glucose, and oxygen to form form energy, carbon dioxide and water
Catabolism
Metabolic pathways that release stored energy by breaking down complex organic molecules
If the reactant molecules have higher potential energy that the product molecules, would the reaction be endergonic or exergonic
The reaction would be exergonic(energy releasing)
Aerobic Respiration
Organism use oxygen to turn fuel such as fats and sugars, into chemical energy
Redox
Transfer of electrons from one molecule to another
Oxidation
Loss of electrons. LEO
For Lewis Dot Diagram: the electrons are farther away from the atom
Reduction
Gain of Electrons. GER
For Lewis Diagram: the electrons are closer to the atoms
Reducing agents
Molecule gives up an electron and becomes oxidized
Electron Shuttle
A redox active, diffusible molecule that shuttles electrons(transfer electrons).
An example is NAD+ = Nicotinamide Adenine Dinucleotide(NAD+)
Dehydrogenases
Enzymes that catalyze reduction reaction through the transfer of hydrogen ions
Electrons get removed from the glucose and are transferred to the ETC(Electron Transport Chain) via NADH. True/False
True. Each step it releases a bit energy. The bonds that hold the electrons in the ETC is increasingly unequal
What are the two different way ATP is made
Substrate-level phosphorylation and Oxidative phosphorylation
Substrate-level phosphorylation
An enzyme catalyzes the transfer of a phosphate from substrate to ADP forming ATP
OR
ADP if phosphorylated by a substrate to produce ATP
Direct transfer of ATP that produces 10% of ATP during cellular respiration
Occurs in cytosol and mitochondria
