Which of the following is utilized first in respiration?

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.

Which mineral is required as an activator for enzymes during glycolysis?

Glycolysis is a part of

Which one of the following products is formed during the glycolysis of glucose?

In the presence of which enzyme does fructose $1, 6$-bisphosphate split into two molecules of triose phosphate?