Which of the following is the connecting link between glycolysis and Kreb's cycle?

Which of the following is true regarding the given electron transport chain?

$\mathrm{CoQ}\to \mathrm{Cyt} c\to \mathrm{Cyt} a-a_3\to {\mathrm{O}}_2$

*Note: The question and options given in book were incorrect and it has been modified here.

$2\left({\mathrm{C}}_{51}{\mathrm{H}}_{98}{\mathrm{O}}_6\right)+145{\mathrm{O}}_2\to 102{\mathrm{CO}}_2+98{\mathrm{H}}_2\mathrm{O}+$ Energy

The RQ of above reaction is

Refer the figure and answer the question.

Which is required in glycolysis?

*Note: The question given in the book is incomplete and, it has been modified here.

Which of the following is required in glycolysis?