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cell processes
cell processes
15
Science
7th Grade
11/01/2010

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Term
diffusion
Definition
the movement of molecules from an area of higher concentration to an area of lower concentration
Term
stomata
Definition
openings on the underside of leaves where carbon dioxide enters
Term
Active Transport
Definition
the movement of materials through a cell membrane using cellular energy.
Term
Replication
Definition
the process by which a cell makes a copy of the DNA in its nucleus
Term
chlorophyll
Definition
a green pigment found in the chloroplasts, algae, and some bacteria
Term
fermentation
Definition
process by which cells break down molecules to release energy without using oxygen
Term
Pigment.
Definition
A colored chemical that absorbs light.
Term
Mitosis
Definition
is the stage during which the cells nucleus divides into new nuclei
Term
osmosis
Definition
The diffusion of water molecules through a selectively permeable membrane.
Term
Respiration
Definition
the process by which cells obtain energy from gluclose.
Term
interphase
Definition
the first stage of the cell cycle
Term
Passive Transport
Definition
The movement of dissolved materials through a cell membrane without using cellular energy
Term
cytokinesis
Definition
when the two new nuclei divide
Term
selectively permeable
Definition
some substances can pass through while others cannot
Term
cell cycle
Definition
cells undergo the process of growing and dividing in this process
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