Which of the given enzymes of glycolysis is required at the beginning of the process?

Which of the following statements ($i$ to $v$) regarding glycolysis are correct?
$(i)$ It is ten enzymatic reactions that convert a six-carbon molecule to a three-carbon pyruvate and result in a net gain of $2\, ATP$ molecules.
$(ii)$ Glucose undergoes partial oxidation to form one molecule of pyruvic acid.
$(iii)$ Glucose is phosphorylated to give rise to glucose-$6$-phosphate by the activity of the enzyme phosphofructokinase.
$(iv)$ The scheme of glycolysis was given by Gustav Embden,Otto Meyerhof,and $J$. Parnas and is often referred to as the $EMP$ pathway.
$(v)$ $ATP$ is utilized at two steps: first in the conversion of glucose into glucose-$6$-phosphate and second in the conversion of fructose-$6$-phosphate to fructose-$1,6$-bisphosphate.

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

In which of the following processes does the isomerization step take place?

Identify the odd one out based on the number of carbon atoms.

The products of aerobic glycolysis in skeletal muscle and anaerobic fermentation in yeast are respectively $..........$ and $..........$.