Sperm cells use fructose, not glucose, as their energy source

sperm cells use fructose as energy source

Sperm cells are the smallest cells in the human body.

All cells require energy for their metabolic functions.

Sperm cells use fructose as the energy source for their metabolism, making them different from other cells that use glucose normally.

This difference ensures that there is no competition for energy between the bacteria present in the vaginal tube (bacteria gets energy from glucose) and the sperm cells, making allowance for the sperm to have enough energy available to swim to the egg.