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Ch 4 Life Science
Cells
25
Science
Not Applicable
09/05/2005

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Cards

Term
bacteria
Definition
extremely small single celled organism without a nucleus.
Term
cell membrane
Definition
a phospolipid layer that covers a cell's surface and acts as a barrier between the inside of a cell and the cell's environment.
Term
cell wall
Definition
a structure that surrounds the cell membrane of some cells and provides strength and support to the cell membrane.
Term
chloroplast
Definition
an organelle found in plant and algae cells where photosynthesis occurs.
Term
community
Definition
all of the populations of different species that live and interact in an area.
Term
cytoplasm
Definition
cellular fluid surrounding a cell's organelles.
Term
ecosystem
Definition
a community of organisms and their nonliving environment.
Term
endoplasmic reticulum
Definition
"a membrane covered organelle that produces lipids, breaks down drugs and other substances, and packages proteins for delivery out of the cell."
Term
eukaryotic
Definition
describes a cell that has a nucleus
Term
golgi complex
Definition
"the cell organelle that modifies, packages, and transports materials out of the cell."
Term
lysosomes
Definition
"special vesicles in cells that digest food particles, wastes, and foreign invaders."
Term
mitochondria
Definition
cell organelles surrounded by tow membranes that break down food molecules to make ATP.
Term
multicellular
Definition
made of many cells
Term
nucleus
Definition
membrane covered organelle found eukaryotic cells that contains a cells DNA and serves as a control center for the cell.
Term
organ
Definition
a combination of two or more tissues that work together to perform a specific function in the body.
Term
organ system
Definition
groups of organs working together to perform body functions.
Term
organelles
Definition
"structures within a cell, sometimes surrounded by a membrane."
Term
organism
Definition
anything that can live on its own.
Term
population
Definition
a group of individuals of the same species that live together in the same area at the same time.
Term
prokaryotic
Definition
describes a cell that does not have a nucleus or any other membrane covered organelles also called bacteria.
Term
ribosomes
Definition
small organelles in cells where proteins are made from amino acids.
Term
tissue
Definition
a group of similar cells that work together to perform a specific job in the body.
Term
unicellular
Definition
made of a single cell
Term
vacuole
Definition
a large membrane covered structure fond in plant cells that serve as storage containers for water and other liquids.
Term
vesicles
Definition
membrane covered compartments in a eukaryotic cell that form when part of the cell membrane surrounds a n object and pinches off.
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