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FLASHCARD
BIOLOGY
25
Biology
9th Grade
11/30/2010

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Term
structure
Definition
the way something is put together
Term
function
Definition
the role that something has, the job something does.
Term
organiam
Definition
an individuel living thing.
Term
unicellular
Definition
single celled
Term
multicellular
Definition
many celled
Term
cell
Definition
the basic unit of life
Term
surface area
Definition
the exposed space that an object has.
Term
volume
Definition
the amount of space something takes up.
Term
fores
Definition
a small opening in a surface through which materials can
Term
eukaryote
Definition
a eukaryotic cell can either be a plants and animal cells.
Term
prokaryote
Definition
one celled organism that does not have a membrane enclosed nucleus
Term
organelle
Definition
a specialized structure that performs a specific function in eukaryotic cells
Term
cell membrane
Definition
membrane that surrounds and proteots the cell. it is made up of a phospholipid bilayer.
Term
cell wall
Definition
the definite boundary or wall that is part of the outer structure of certain cells, as a plant cell
Term
Nucleolus
Definition
a conspicuous, rounded body within the nucleus of a cell.
Term
pores
Definition
a small opening in a surface through which materials can pass.
Term
Cytoplasm
Definition
is a thick liquid residing between the cell membrane holding organelles,except for the nucleus.
Term
Mitochondria
Definition
an organelle in the cytoplasm of cells that functions in energy production.
Term
Ribosome
Definition
a tiny, somewhat mitten-shaped organelle occurring in great numbers in the cell cytoplasm either freely, in small clusters, or attached to the outer surfaces of endoplasmic reticula, and functioning as the site of protein manufacture.
Term
Diffusion
Definition
a reflection or refraction of light or other electromagnetic radiation from an irregular surface or an erratic dispersion through a surface; scattering.
Term
Osmosis
Definition
the tendency of a fluid, usually water, to pass through a semipermeable membrane into a solution where the solvent concentration is higher, thus equalizing the concentrations of materials on either side of the membrane.
Term
Solute
Definition
the substance dissolved in a given solution.
Term
Solvent
Definition
a substance that dissolves another to form a solution: Water is a solvent for sugar.
Term
Hypertonic Solution
Definition
any solution with a higher salt concentration than normal body cells so that the water is drawn out of the cells by osmosis; any solution with a higher osmotic pressure than another solution
Term
Hypotonic Solution
Definition
any solution with a lower salt concentration than normal body cells so that water flows into the cells by osmosis; any solution with a lower osmotic pressure than another solution
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