Question

Cristae in mitochondria serves as sites for

• A. oxidation reduction reaction
• B. protein synthesis
• C. macromolecules breakdown
• D. flavoproteins are phosphorylated

Answer 1

Answer:

A. oxidation reduction reaction

• Protein synthesis is carried out by ribosomes.

• Breakdown of macro moles carried out by various enzymes in the digestive system.

• Flavoprotein is one of the components of the electron transport chain present in the cristae of mitochondria.

• Mitochondria are bounded by a double membranous layer.

• Its inner membrane shows the presence of finger-like projection called cristae.

• This folded structure increases the surface area for chemical reaction.

• Electron transport system is present in the cristae (inner membrane infoldings of mitochondria).

• It is made up of cytochromes and co-engines which act as carrier molecules and transfer molecules .

• These molecules accept high energy electrons and pass them to the next molecule in the system.

• At proton pumping sites, the energy of electrons used to pump protons into the outer component of mitochondria.