Answer:
The nucleus binds together the protons and don't allow them to react with the freely movable electrons. The nucleus contains only neutrons and protons. Neutrons have no charge and don't react at all. Protons have positive charge. The force of attraction can't occur between the protons and electrons because of the nucleus' wall.
Answer:
B. ensure the production of GTP in the case of succinyl-CoA
Explanation:
Succinyl CoA like acetyl-CoA has a thioester bond with very negative free energy of hydrolysis. In this reaction, hydrolysis of the thioester bond leads to the formation of phosphoester bond with inorganic phosphate. This phosphate is transferred to histidine residue of the enzyme and this high energy unstable phosphate is finall transferred to GDP resulting in generation of GTP.
Hence the answer is B. ensure the production of GTP in the case of succinyl-CoA.