Unit 100 SCIENCE WORDS( antibodies - genetic engineering )
antibodies [special proteins, produced in the blood, that kill harmful bacteria] The body's defense system creates different antibodies for each disease it fights.
atom [a very small part of all things; the smallest part of an element that can join with parts of other elements] All matter is made of atoms.
bacteria [living things that are one cell and can be seen only through a microscope; some cause disease] Some bacteria cause disease.
cell [a small mass of living material that is part of all plants and animals] All plants and animals are made of cells.
chromosome [a line of genes; most human cells contain 46 chromosomes] Chromosomes carry the genes that make each of us different.
compound [a substance containing two or more elements] A compound contains two or more chemical elements.
dense [close together; thick] Lead is a dense material.
electron [a small part of an atom that has an electrical force] An electron is a small part of an atom.
element [one of more than 100 substances known to science that cannot be separated into other substances] An element cannot be separated into other substances.
enzyme [a special kind of protein; it produces changes in other substances without being changed itself] An enzyme can change other substances without being changed itself.
fetus [unborn young] A human embryo becomes a fetus after eight weeks.
fission [a splitting; in atomic fission, the nucleus of an atom is split to produce nuclear energy] Nuclear fission splits atoms to produce energy.
fusion [a joining together; in atomic fusion, atomic particles are joined together to produce nuclear energy] Nuclear fusion joins atoms to produce energy.
genes [parts of cells that control the growth and development of living things; genes from the mother and father are passed to the child; genes contain nucleic acid] Genes in the cell control the growth and development of living things.
genetic engineering [the science of changing the genes of a living thing] Genetic engineering changes the genes of a living organism.
