In pyruvic acid,the number of carbons is:

Glycolysis is found in the cytoplasm of virtually all types of aerobic and anaerobic cells. In this process,glucose is converted into a compound which is:

In which initial stage of animal cells does glucose break down?

Choose the correct option:
$(1)$ Glucose and fructose are phosphorylated by the enzyme transferase/hexokinase to form glucose $6$-phosphate.
$(2)$ In fermentation,yeast converts glucose into ethanol under aerobic/anaerobic conditions.

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

Which enzyme is active only in the presence of $Mg^{2+}$, $Mn^{2+}$, or $Zn^{2+}$?