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Chapter 9 section 1

Terms in this set (25)

Cell
the smallest unit of a living thing that cab perform the functions of life.
Mixture
combinations of substances in which individual substances regain their properties
Organic compounds
contain carbon and are usually associated with living things or things that use to be living: four groups of organic compounds make up all living things.
Enzymes
proteins that regulate nearly all chemical reactions.
Inorganic compounds
made up of elements other than carbon.
Mass space
matter is any thing that has __________ and takes up __________.
Matter
energy can hold ___________ together or break it apart.
Protons nutrons
A nucleus contains _____________ & ___________.
Chemical Reactions
Out side the nucleus are electrons, which are involved in ______________ ____________________.
Periodic table of elements
arranges in a chart called the ...
Elements
made of two or more _______________ in the exact proportions.
Molecule
a group of atoms held together by the energy of chemical bounds
Most of life processes occur in it
why is water so important in life as we know it??????
Ions
electrically charged atoms, positive or negative.
Solution
mixture in which two or more substances are mixed evenly.
Suspension
forms when a liquid or gas has another substance evenly spreads through out it.
Carbohydrates
supply energy for cell processes
Lipids
store and release large amounts of energy.
Proteins
are the building blocks of many structures
Nucleic acids
store important coded information in cells
50%
living things are made up of _______________ of water and depend on it to survive .
Water solutions
all chemical reactions that occur in water happen in __________ _________________.
Transport
most living things use water to ________________ materials through their bodies.
properties
have different ________________ form the elements they are made of.
Amino acids
smaller molecules that make up proteins.
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