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Science Semester Test 7th Grade Dec. 2018

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unicellular organisms

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Terms in this set (79)

unicellular organisms

living organisms that are composed of just one cell

multicellular organisms

living organisms that are made of more than one cell

organisms

living things made up of one or more cells that can perform all the processes needed for life

cell

the smallest unit that can be said to be alive

compound microscope

contains two or more lenses

Robert Hooke

English scientist who built a compound microscope

cork

the item being examined when cells were discovered

electron microscope

can make images of individual atoms

cell membrane

surrounds and protects the cell

organelles

small membrane-bound structures in the cytoplasm that are specialized to perform a specific function

prokaryotic cells

most do not have any membrane bound organelles, unicellular organisms

eukaryotic cells

genetic material is enclosed in a membrane bound organelle

nucleus

this is the organelle that contains the genetic material

mitochondria

organelle that converts the energy stored in food to a form of energy that cells can use

chloroplasts

the organelle where photosynthesis occurs