What happens to the energy stored in the biomass of an organism when it dies?

The energy is recycled

Explanation:

This energy is taken by decomposers such as bacteria and fungi and scavengers such as vultures. The biomass is converted to other biomolecules/biomass by these organisms. However, the process is not 100% efficient. Some of the energy is lost as heat.

answer; the male's sperm cells have mitochondria, but because the sperm contributes dna but no cytoplasm, no mitochondria are passed to the egg at ferilization;