Aerobic Respiration Flashcards
When does Aerobic Respiration occur>
When there is a plentiful supply of oxygen
What are the three stages of Cellular Respiration?
Glycolysis
Kreb’s Cycle
Electron Transport Chain
What is the mitochondria?
Organelle responsible for cellular respiration
What is the structure of the mitochondria? And what occurs in each?
Mitochondrial matrix - Kreb’s Cycle, link reaction
Cristae - Electron Transport Chain
What is the purpose of Glycolysis
To convert Glucose into 2 Pyruvate molecules
Location of Glycolysis
Cytosol
Inputs and outputs of Glycolysis
Inputs: Glucose, ADP, NAD+
Outputs: 2 Pyruvate, 2 ATP, 2 NADH
*The 2 ATP is important - remember it
Process of Glycolysis
Glucose is broken down into 2 pyruvate molecules
NAD+ accepts any left-over hydrogens from glucose
ATP stores energy from breaking down glucose
Pyruvate and NADH are moved to the mitochondrial matrix for further breakdown
What os the link reaction and it’s location?
Stage between Glycolysis and the Kreb’s Cycle, occurs in the mitochondrial matrix
Pyruvate is converted into Acetyl CoA, and any remaining CO2 is released
What is the purpose of the Kreb’s Cycle?
To produce high energy carriers (NADH and FADH2) for use in the ETC
What are the inputs and outputs PER CYCLE for the Kreb’s Cycle?
Inputs: 1 Pyruvate/Acetyl-CoA, ADP+, FAD+, NAD+
Outputs: CO2, 2 ATP, FaDH2, NADH
Process of Kreb’s Cycle
Each Acetyl-CoA requires 1 cycle to be processed
Acetyl-CoA is broken down, releasing high energy electrons and protons
The released electrons and protons are loaded onto NAD+ and FAD molecules to create the loaded co-enzymes (NADH and FADH2)
What is the purpose of the Electron Transport Chain?
To recycle the coenzymes (NADH and FADH2) for reuse in the Kreb’s Cycle as well as produce a large amount of energy for the cell
Inputs and outputs of ETC (per cycle)
Inputs: O2, NADH, FADH2, ADP
Outputs: H2O, NAD+, FAD+, 26/28 ATP
State the ATP yields of each stage
Glycolysis 2 ATP
Kreb’s 2 ATP
ETC 26/28 ATP
