Glencoe Living Systems Biology Chapter 3

Front 1

Anything that has mass and occupies space

Back 1

Matter

Front 2

Basic building blocks, what matter is composed of

Back 2

Atoms

Front 3

negatively charged particle of an atom

Back 3

Electron

Front 4

Positively charged particle of an atom

Back 4

Proton

Front 5

Particle of an atom with no charge

Back 5

Neutron

Front 6

The region or space that electrons occupy while moving around the nucleus

Back 6

Electron Cloud

Front 7

Different regions in which electrons travel about

Back 7

Energy Levels

Front 8

Substances composed of only one type of atom

Back 8

Elements

Front 9

An atom with a varying number of neutrons

Back 9

Isotope

Front 10

When atoms combine by sharing electons

Back 10

Covalent Bond

Front 11

When two or more atoms are joined by a covalent bond they form a(n) _____ .

Back 11

Molecule

Front 12

Combined atoms are held together by forces called _____ .

Back 12

Chemical bonds

Front 13

A substance composed of two or more atoms of different elements joined by a chemical bond.

Back 13

Compound

Front 14

A charged atom

Back 14

Ion

Front 15

The force of attraction between two or more ions is called an

Back 15

Ionic Bond

Front 16

A group of symbols that show the number and kind of each atom in a compound

Back 16

Chemical Formula

Front 17

Mixtures that are the same throughout but have variable compositions

Back 17

Solutions

Front 18

When a solution has a greater concentration of hydrogen ions than hydroxide ions

Back 18

Acid

Front 19

When a solution has a greater concentration of hydroxide ions than hydrogen ions

Back 19

Base

Front 20

All organic compounds contain

Back 20

Carbon

Front 21

Organic molecules that have the same chemical formula but different structural formulas.

Back 21

Isomers

Front 22

The four basic biologic organic compound

Back 22

Carbohydrates, Lipids, Proteins, Nucleic Acids

Front 23

Carbohydrates are used for

Back 23

Energy Sources

Front 24

Starches and sugars are examples of

Back 24

Carbohydrates

Front 25

Lipids are used for

Back 25

Energy Sources

Front 26

Solid fats, waxes, and liquid oils are examples of

Back 26

Lipids

Front 27

Proteins are used for

Back 27

Building living material

Front 28

Muscle contracting units and hair are examples of

Back 28

Proteins

Front 29

Nucleic acids include

Back 29

DNA

Front 30

Nucleic acids are used for

Back 30

Genetic codes

Front 31

Digesting food is an example of

Back 31

A chemical property

Front 32

Freezing water is an example of

Back 32

A change in physical property

Front 33

Rusting iron is an example of

Back 33

A change in chemical property

Front 34

Melting wax is an example of

Back 34

A change in physical property

Front 35

Dissolving sugar is an example of

Back 35

A change in physical property

Front 36

Chewing food is an example of

Back 36

A change in physical property

Front 37

Proteins are made up of

Back 37

Amino Acids

Front 38

There are ___ amino acids

Back 38

20

Front 39

Composed of fatty acids and glycerol

Back 39

Lipids

Front 40

Maltose and sucrose are two example of

Back 40

Disaccharides

Front 41

Cellulose, glycogen, and starch are

Back 41

Polysaccharides

Front 42

When large molecules are converted to smaller ones

Back 42

Hydrolysis

Front 43

When small molecules are converted to larger ones

Back 43

Condensation