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Bio 2.1
2.1
15
Biology
Undergraduate 1
01/31/2014

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Term
Chemicals
Definition
Are the stuff that make up our bodies, the bodies of other organisms and the physical environment
Term
Water
Definition
Life's chemistry is tied to water
Term
Water
Definition
Life first evolved in water
Term
70-95% water
Definition
the chemical reactions of your body occur in cells consiting of...
Term
elements, compunds
Definition
Organisms are compoised of _______ in combinations called_______
Term
Matter
Definition
Living organisms are composed of _____ which is anything that occupies and has mass
Term
Elements
Definition
Matter is composed of chemical______
Term
Cannot be broken down to other substances
Definition
An element is a substance that ______
Term
92
Definition
How many elements are in nature
Term
Two or more different elements
Definition
A compund is a subtance made from_______ in a fixed ratio.
Term
Sodium Chloride
Definition
is a common compund of equal parts of sodim and chlorine
Term
25
Definition
How many elements are esstential to life
Term
Oxygen, carbon, hydrogen, and nitrogen
Definition
Four elements make up about 96% of the weight of most living organisms. These are...
Term
Electronegitivity
Definition
Looking to hook up elements
Term
Trace elements
Definition
Only esstential for needed minutes
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