In your own words, what does heterozygous and homozygous mean?

An organism with the dominant trait and one recessive trait. The organism would be called heterozygous. Heterozygous means hybrid.
Homozygote- an organism with two dominant or two recessive traits. The organism with two dominant traits could be called homozygous dominant or pure dominant. The organism with two recessive traits could be called homozygous recessive or pure recessive. Homozygous means pure. 

Ibelieve its b but u might have to

Molecules called lipids have long hydrocarbon chains that determine the way they act. they can be fats, oils, or hormones, and even exist in our cell membranes