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

How many substrate-level $ATP$ (or $GTP$) molecules are synthesized when $\alpha$-ketoglutaric acid is converted into succinic acid in the Krebs cycle?

In mitochondria,where do the Krebs cycle and oxidative phosphorylation take place,respectively?

In the $TCA$ cycle,the conversion of succinyl $CoA$ to succinic acid requires which of the following?

Which of the following is the correct sequence in the $Krebs$ cycle?

Select the correct option:
$(1)$ During aerobic respiration,$32$ $ATP$ / $38$ $ATP$ are obtained from one molecule of glucose.
$(2)$ The reactions of the Krebs cycle occur in the mitochondrial matrix / inner mitochondrial membrane.