Biology Chapter 2 and 3 Quiz

A water molecule is neutral.

• True

• False

Subatomic particles of an atom are the proton, electron and

• neutral

• neutron

• negative

An atom's atomic number represents that number of__________ in an atom.

• protons

• neutrons

This scale measures how acidic or basic something is in science.

• lH

• 4H

• pH

• rH

How many valence (outer shell) electrons does carbon have?

• 8

• 6

• 4

Covalent bonds share ________________.

• neutrons

• protons

• electrons

A monosaccharide is a

• polymer of sugars

• single sugar

• starch

Proteins are made of

• sugar

• fats

• amino acids

Monomers that make up nucleic acids are called

• nucleotides

• nuclear reactors

• neutrons

Three common categories of lipids are fats, waxes and

• oils

• sugars

• amino acids