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7-2
Bio class notes
15
Biology
10th Grade
11/22/2010

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Term
chromation
Definition
The ganular material visible within the nucleus
Term
Chromosomes
Definition
are distinct threadlike structures containing the genetic information
Term
necleolus
Definition
most nuckui also contain a small dense region known as
Term
nuclear envelope
Definition
double membrane layer
Term
cytoskeleton
Definition
network of proteins filaments that help the cell to maintain its shape
Term
microtubules
Definition
are hollow tubes of protiens about 25 nanometers in diameter
Term
microfilaments
Definition
are long thin fibers that function in the movement and support of the cell
Term
ribosomes
Definition
small particles made of RNA
Term
endoplasmic reticulum
Definition
internal membrane system known as (term) in eukaryotes
Term
Golgi apparatus
Definition
Proteins produced by the rough endoplasmic reticulum move into a sack called
Term
lysosome
Definition

small organelles filled with enzymes

function is to break down macromoluecles

Term
vaculoe
Definition
cell organelle sack like structure store materials  such as water salts and many more
Term
chloroplast
Definition
organelle found in cells of plants and some other organisims that uses energy from sunlight
Term
mitochondrion
Definition
cell organelle that releases energy from stored food molecules
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