Glycolysis:
$I$. Causes partial oxidation of glucose (one molecule) to form $2$ molecules of pyruvic acid and $2$ $ATP$ as net gain.
$II$. Takes place in all living cells.
$III$. Uses $2$ $ATP$ at two steps.
$IV$. Scheme was given by Gustav Embden,Otto Meyerhof,and $J$. Parnas.
Choose the correct option containing appropriate statements from the above.

During oxidation in glycolysis,electrons are removed by .........

During phosphorylation in glycolysis,which $3C$ sugars are transformed into each other?

Identify the incorrect reaction from the following processes.

Which of the following processes should not operate when organic acids are used as respiratory substrates?

Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$:
Assertion $A:$ $ATP$ is used at two steps in glycolysis.
Reason $R:$ First $ATP$ is used in converting glucose into glucose-$6$-phosphate and second $ATP$ is used in conversion of fructose-$6$-phosphate into fructose-$1,6$-bisphosphate.
In the light of the above statements,choose the correct answer from the options given below: