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Chapter 16 Section 2
The Necessities of Life
10
Science
7th Grade
01/15/2009

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Term
Producer
Definition

An organism that can make its own food by using energy from its surroundings.

Term
Consumer
Definition

An organism that eats other organisms or organic matter.

Term
Decomposer
Definition

An organism that gets energy by breaking down the remains of dead organism or animal wastes and consuming or absorbing the nutrients.

Term
Protein
Definition

A molecule that is made up of amino acids and that is needed to build and repair body structures and to regulate processes in the body.

Term
Carbohydrate
Definition

A class of energy giving nutrients that includes sugars, starches, and giver; contains carbon, hydrogen, and oxygen.

Term
Lipid
Definition
Term
Lipid
Definition

A type of biochemical that does not dissolve in water; fats and steroids are lipids.

Term
Phospholipid
Definition

A lipid that contains a phosphorous and that is a structural component in cell membranes.

Term
ATP
Definition

Adenosine Triphosphate, a molecule that acts as the main energy source for cell processes.

Term
Nucleic acid
Definition

A molecule made up of subunits called nucleotides.

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