Chapter 2 Biology

Front 1

The subatomic particles that make up atoms are

Back 1

protons, neutrons, and electrons

Front 2

Because they have the same number of ______, all _____ of an element have the same _____.

Back 2

protons, isotopes, chemical properties

Front 3

The main types of chemical bonds are

Back 3

covalent and ionic

Front 4

A water molecule is polar because there is an uneven distribution of _____ between the _____ and _____ atoms.

Back 4

electrons, oxygen and hydrogen

Front 5

Acidic solutions contain higer concentrations of _____ ions than pure water and have _____ values _____.

Back 5

H+, pH, below 7

Front 6

Basic, or _____, solutions contain _____ concentrations of H+ ions than pure water and have pH values _____.

Back 6

alkaline, lower, above 7

Front 7

Four groups of _____ _____ found in living things are _____, _____, _____, and _____.

Back 7

carbon compunds, proteins, carbohydrates, lipids, and nucleic acids

Front 8

Living things use _____ as their main source of energy

Back 8

carbohydrates

Front 9

Plants and some animals also use carbohydrates for _____

Back 9

structural purposes

Front 10

Lipids can be used to _____, and are important parts of ______ and ______

Back 10

store energy, biological membranes, waterproof coverings

Front 11

Nucleic acids ____ and ____ hereditary, or _____, information.

Back 11

store and transmit, genetic

Front 12

Some proetins build tissues such as _____ and _____. Others transport _____ or help to _____.

Back 12

bone and muscle, material, fight disease

Front 13

Chemical reactions always involve the ______ of ______ in _____ and the ______ of new bonds in ______.

Back 13

breaking of bonds, reactants, formation, products

Front 14

Chemical reactions that _____ energy often occur _____. Chemical reactions that _____ energy will not occur without a ______.

Back 14

release, spontaneously, absorb, source of energy

Front 15

Cells use _____ to _____ up chemical reactions that take place in cells.

Back 15

enzymes, speed