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cells and parts
n/a
26
Biology
10th Grade
01/07/2013

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Term
4 tissues
Definition
1.muscle
2.nervous
3.connective
4.epithelial
Term
mitochondion
Definition
organelles that convert the chemical energy stored in food into compounds that are more convenient for the cell to use
Term
cell theory
Definition
*cells are basic units of life
*all living things are mad of cells
*all cells are produced by existing cells
Term
prokaryotes
Definition
do not contain a nucleus & organelles
Term
eukaryotes
Definition
contain nucleus ,organelles, and genetic material
Term
cell membrane
Definition
acts as a protective barrier to the uncontrolled flow of water
Term
secretory vesicle
Definition
inside golgi store cell secretions and transport them to cells surface for release
Term
Cell
Definition
basic unit of life
Term
nucleus
Definition
is a large membrane- enclosed structure that contains the cells genetic material (DNA)
Term
organelle
Definition
literally "little organs"
Term
cytoplasm
Definition
is the portion of the cell outside the nucleus
Term
nuclear envelope
Definition
dotted with thousands of nuclear pores which allow material to move into and out of the nucleus
Term
chromatin
Definition
consist of DNA bound to protein
Term
chromosomes
Definition
thread like structures contain the genetic information that is passed from generations of cells
Term
nucleolus
Definition
is where the assembly of ribosomes begin
Term
ribosomes
Definition
are small particles of RNA and protein found throughout the cytoplasm
Term
endoplasmic reticulum
Definition
site where lipid components of the cell membrane are assembled
Term
Golgi apparatus
Definition
proteins produced in the ER move next into an organelle
Term
lysosome
Definition
are small organelles filled with enzymes
Term
vacuole
Definition
some kinds of cells contain sac-like structures
Term
chloroplast
Definition
organelles that capture the energy from the sunlight and convert it into chemical energy
Term
cytoskeleton
Definition
is a network of protein filagments that helps the cell to maintain its shape
Term
centriole
Definition
located near the nucleus and helps to organize cell division
Term
cell membrane
Definition
cell surrounded by a thin flexible barrier
Term
cell wall
Definition
a strong supporting layer around the membrane
Term
lipid bilayer
Definition
the composition of nearly all cell membranes is a double layered sheet
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