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Cells
cell structure. Things that are in the cell such as the nucleus and cell wall.
22
Biology
9th Grade
01/12/2010

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Term
nuclear envelope/membrane
Definition
layer of 2 membranes that surronds the cell
Term
centnole
Definition
tiny structure located in cytoplasm of animal cell near the nuclear envelope
Term
Rough endoplasmic reticulum
Definition
system of membranes that fuction in the materials w/in the cell.  Processes proteins.
Term
Smooth endoplasmic reticulum
Definition
transfers materials in the cell.  Has no ribosomes.  Processes liquids and carbohydrates.
Term
golgo bodies/golgi complex
Definition
packs proteins that will exit the cell.  Membrane-bound sacs.
Term
mitochondria
Definition
supplies the cell w/ energy.  Releases energy that is in food.
Term
microfilament
Definition
changes cells shape and involved the the cytoplasmic movement
Term
microtubule
Definition
involved in inter shape and transport
Term
plastid
Definition
stores chloroplast, and cotains ribosomes, DNA, and pigment
Term
chromoplast
Definition
contains chlorophyll
Term
microbody
Definition
cytoplasmic particles containing enzymes
Term
cytoskeleton
Definition
network of protein filaments in some cells.  Helps the cell mantain shape and involved in it's movement.
Term
chloroplast
Definition
organelle found in cells of plants and orgainsms.  Captures the energy from sunlight then converts it to chemical energy
Term
cytoplasm
Definition
material inside the cell membrane.  does not include the nucleus
Term
cell wall
Definition
supporting layer around the membrane in plant cells, algae, and some bacteria
Term
cell membrane
Definition
thin, flexable barrier around cell.  Regulates what will enter and leave cell
Term
nucleus
Definition
contains the cells DNA and controls activites.  Contains DNA.
Term
nucleolus
Definition
small, dense region within nuclei in which the assembly of proteins begins
Term
ribosome
Definition
makes proteins.  Free floating or attached to the ER.
Term
lysosome
Definition
Contains enzymes to digest food particles inside the cell.
Term
vacuole
Definition
stores materials like water, salts, proteins, and carbohydrates.  Membrane bound sac
Term
chromatin
Definition
granular material within the nucleus; contains DNA that is coilded around proteins
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