Sperm cells contain no energy reserves, so they absorb sugar released by the seminal vesicles into the fluid known as ; this provides sperm cells with sugar that can then be used to make ATP.

Semen

Explanation:

Sperm cells are produced by the testes. These cells when produced have low energy and aren’t able to swim to the eggs for fertilization.

The Sperm cells contain no energy reserves, so they absorb sugar released by the seminal vesicles into the fluid known as Semen. This provides sperm cells with sugar that can then be used to make ATP.

materials water oxygen those are the things i can think of in this moment.

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.