Chemistry of Life

What is the smallest unit of matter?

A pure substance composed of only ONE of more than a hundred types of atoms.

The atomic symbol of potassium is:

The atomic symbol Na stands for:

Compounds that form ions when dissolved in water are called:

Two systems in the body that act to buffer pH changes are the:

An electrically charged atom formed by loss or gain of one or more electrons is called:

Normal blood potassium level is:

What is the role of ATP in the body?

Water is an example of:

Low levels of sodium in the blood is referred to as:

A relative constancy of the internal environment, cells are regulated in the body to stay in balance with life.

A substance with a pH of 5 has what concentration of hydrogen ions?

The molecular formula of water is:

The pH value increases as the number of hydrogen ions:

DNA

A measurement of free hydrogen ions to determine a substance acid or base level is called:

Are not and never were living compounds, few have carbon, examples are water, acids and bases.

Proteins are made up of:

Four elements that compose greater than 96% of body weight.

Proteins that speed up chemical reactions in the body are called:

A covalent bond is formed when atoms:

The substances that are dissolved in water, or another liquid are referred to as:

The body is known to be described as:

The normal pH of the human body is:

An ionic bond is formed when an atom needs one or two electrons to fill its outer level. Another atom will do this:

The combination of a solvent and a solute makes up what?

Excess potassium in the blood is referred to as:

Living compounds, complex, contain carbon. Examples are carbohydrates, lipids, proteins.

Atoms are composed of: