AP Bio Cellular Respiration and Phoyosynthesis

Cytosol

Glycolysis takes place in the

Matrix

Pyruvate oxidation(transition reaction) are located in the _____ of the mitochondria

Matrix

The citric acid cycle (Krebs cycle) is located in the _____ of the mitochondria

Inner membrane

Oxidative phosphorylation (ETC + ATP synthase) are located on the ____ of the mitochondria

Glycolysis and Krebs Cycle

Which stages of cellular respiration use substrate level phosphorylation to generate ATP?

Electron Transport Chain

Which stages of cellular respiration use oxidative phosphorylation?

Oxidation

Losing electrons

Reduction

Gaining electrons

Redox Reactions

Oxidation and reduction during the ETC are what kind of reactions?

Glucose

What molecule is oxidized during cellular respiration?

Glucose —> NADH —> ETC —> O2

Describe the flow of electrons (energy) during cellular respiration

Oxygen, it’s the final electron acceptor in the electron transport chain.

What molecule is reduced or gains electrons in cellular respiration?

Spilling all the energy from glucose would lead to tremendous heat loss, so instead energy is temporarily stored in NADH and FADH2

Why are there so many reactions in cellular respiration? Why not just spill all the energy from glucose?

1 glucose + 6 oxygen —> 6carbon dioxide + 6 water + ATP

Equation for cellular respiration

1 glucose is oxidized to 2 pyruvate. Some of the energy stored in glucose is extracted and used to build 2NADH and 2ATP per 1M glucose.

Summary of glycolysis

2 ATP and 2 NADH per 1 M glucose

Glycolysis products

2 pyruvate from glycolysis are oxidized to 2 acetyl CoA. Some of the energy stored in pyruvate is extracted and used to build 2 NADH. 2 CO2 are produced as metabolic waste

Summarize the transition reaction

0 ATP, 2 acetyl CoA, 2 NADH, 2 CO2

Transition reaction products per 2 pyruvate