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Cells: Basic Units of Life
n/a
6
Biology
7th Grade
10/21/2010

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Term
cell
Definition
is the smallest unit that can perform all the processes necessary for life
Term
cell membrane
Definition
a phospholipid layer that covers a cells surface; acts as a barrier between the inside of a cell and the cells environment
Term
organelle
Definition
one of the small bodies in a cells cytoplasm that are specialized to perform a specific funtion
Term
nucleus
Definition
in a eukaryotic cell a membrane-bound organelle that contains the cells DNA and that has a role in process such as growth metabolism, and reprodution
Term
prokaryote
Definition
an organism that consists of a single cell that does not have a nucleus
Term
eukaryote
Definition
an organism made up of cells that have a nucleus enclosed b a membrane; eukaryotes include animals, plants, and fungi, but not archaebacteria or eubacteria
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