Answer:
boson
Explanation:
In quantum mechanics, a boson is a particle that follows Bose–Einstein statistics. Bosons make up one of the two classes of particles, the other being fermions
Protects, helps thermoregulate, provides sense of touch, helps remove waste
Sperm cells inside the pollen grain travel down the pollen tube and into the ovary which contains the ovules. Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule
An enzyme is a biological "catalyst" that speeds up a chemical reaction. So is a catalyst