Biology #1

If an atom contains 3 protons, 4 neutrons and 3 electrons, its' mass number is

• 3

• 8

• 7

• 10

If an atom contains 11 protons and 12 neutrons, its atomic number is

• 11

• 12

• 1

• 0

A covalent bond is formed as the result of

• sharing electrons

• sharing neutrons

• sharing protons

• sharing molecules

Water molecules are polar with the

• hydrogen side being slightly negative and the oxygen side being slightly positive

• oxygen side being slightly negative and the hydrogen side being slightly positive

• oxygen side being slightly positive and the hydrogen side being slightly negaitive

If you stir salt into boiling water, you produce a

• Mixture called a compound

• Mixture called a molecule

• Mixture called a solution

Solutions that have more OH- than H+ ions are

• acidic

• basic

• neutral

Why is carbon so special compared to other elements?

• Carbon atoms can bond

• Carbon atoms form a lot of different structures

• Carbon atoms can bond to one another and form a lot of different structures

How many covalent bonds can a carbon atom form?

• 2

• 4

• 6

• 8

Amino acid to protein as

• simple sugar is to starch

• simple sugar is to diabetes

• protein is to fat

In chemical reactions, atoms are

• rearranged

• organized

• eliminated