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Glossary of 4th grade science vocab

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Cell
The basic unit of structure and function in a living thing.
Cell Membrane
A thin wall that gives the cell its shape
cytoplasm
A jelly like substance that fills the inside of the cell
Nucleus
the brain of the cell
cell wall
a structure that keeps the cell hard and supports the plant
Chloroplasts
contain chlorophyll and make the
plant green
microorganisms
tiny living things that you can only see with a microscope
Vertebrate
animals with a backbone. Humans
snakes, dogs.
Invertebrates
Animals that do not have a backbone. insects
arthropods
the largest group of invertebrates. all insects are arthropods

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