biology
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chapter 1
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18 Terms
cell
the basic unit of life
microscope
an instrument used to magnify things
electron microscope
an instrument that uses a beam of tiny particles called electrons to magnify things
organelle
a tiny structure inside a cell
tissue
a group of cells that are similar and work together
organ
a group of different tissues that work together
solution
a mixture in which the particles are evenly mixed
carbohydrate
a sugar or starch which living things use for energy
fat
a chemical that stores large amounts of energy
mineral
a chemical found in foods that is needed by living things in small amounts
nutrient
any chemical found in foods that is needed by living things
protein
a chemical used by living things to build and repair body parts and regulate body activities
vitamin
a chemical found in foods that is needed by living things in small amounts
digestion
the process by which living things break down food
excretion
the process by which living things get rid of wastes
respiration
the process by which living things release energy from food
development
the changes that occur as a living thing grows
reproduction
the process by which living things produce offspring