NEET

Which of the following is a 4-carbon compound?

Which one of the following is complex V of the ETS of inner mitochondrial membrane ?

Which of the following processes make direct use of oxygen?

Which statement concerning ATP synthesis is true?

ATP can be synthesized through substrate level phosphorylation,photophosphorylation and oxidative phosphorylation.
The proton-motive force is the establishment of proton gradients and electro chemical potentials across the inner membrane.
Proton-motive force is essential for back flow of H⁺ from outer chamber of matrix of mitochondria through proton channel(F_zero) of F_zero – F₁ particle to produce ATP.
All of the above

In an electron transport chain in terminal oxidation the cytochrome which donates electrons to O₂ is

Solution

Cytochrome a₃ is terminal cytochrome of ETC. It has Fe⁺⁺⁺ and Cu⁺⁺ both. With Fe⁺⁺⁺, it picks up electrons and through Cu+it passes electrons to oxygen.

In electron transport system (ETS), which of the following cytochrome reacts with oxygen ?

Oxidation of succinate to fumarate in the Kereb’s cycle is due to

FAD is electron acceptor during oxidation of which of the following

Which intermediate compound is involved in the synthesis of amino acids?

Solution

Amino acid like aspartate and glutamate on deamination from organic acids like OAA and a- Ketoglutaric acid respectively which enter into Kreb's cycle.

Which of the following processes make direct use of oxygen?

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