Module 3 Topic 2: Electric Transport Chain

8 flashcards · Other · by Haroon Chehabzada

1. What is the Electron Transport Chain (ETC)?

   The Electron Transport Chain (ETC) is a critical component of cellular respiration that generates energy through oxidative phosphorylation and consists of several complexes that are involved in electron transport.

2. What is the role of the ETC in cellular respiration?

   The ETC uses oxygen to generate ATP and is linked to both glycolysis and the TCA cycle.

3. What are electron shuttles and what is their role in the ETC?

   Electron shuttles (NADH and FADH) transport electrons from the cytosol to the ETC to be used in generating ATP.

4. What are the two processes critical to energy production and how are they coupled?

   The two processes critical to energy production are the Electron Transport Chain (ETC) and oxidative phosphorylation. They work independently but are coupled to form ATP through the chemiosmotic theory.

5. What are the complexes involved in the ETC?

   The complexes involved in the ETC are Complex I (NADH Dehydrogenase), Complex II (Succinate Dehydrogenase), Complex III (Cytochrome C Reductase), and Complex IV (Cytochrome C Oxidase).

6. What is the respiratory chain and where does respiration occur?

   The respiratory chain is the process in which electrons are passed from NADH and FADH2 to a series of electron carriers located in the inner mitochondrial membrane. Respiration occurs in the mitochondria.

7. What is the role of the proton gradient in energy production?

   The energy stored in the proton gradient provides the potential to synthesize ATP.

8. What are the components of the respiratory chain?

   The components of the respiratory chain are Complex I (NADH dehydrogenase), Complex II (succinate dehydrogenase), Complex III (cytochrome bc1 complex), and Complex IV (cytochrome oxidase).