Well, to put it to the simplest way I can get it. Protein acts as a car engine because it gives us the energy to go and do things like a car engine gives a car the will to move.
Answer:
what do you need help with I might be able to help.
Explanation:
<span>Only one sperm normally fuses
with an egg because if more than one sperm fuses, through a process
called polyspermy, development of the zygote usually stops.
</span>
<span>Fertilization of one egg by
two sperm is possible, but the resulting zygote is almost never viable
because such a zygote would have three sets of chromosomes instead of
the normal two. This condition, called triploidy, is usually
incompatible with life. Those rare triploid infants that do survive to
term have severe and multiple birth defects and rarely live more than a
few days. </span>
