Chemistry of Life Review

Which of the following is NOT an organic

molecule found in living organisms?

• protein

• nucleic acid

• sodium chloride

• lipid

Which of the following molecules is made up of

glycerol and fatty acids?

• sugars

• starches

• lipids

• nucleic acids

Nucleotides consist of a phosphate group, a nitrogenous base, and a

• fatty acid

• lipid

• 5-carbon sugar

• 6-carbon sugar

Tags

NGSS.MS-LS3-1

The smallest unit of matter that maintains its unique chemical identity is known as....

• a cell

• an atom

• a proton

• an electron

True or False:

All carbon atoms contain 6 protons.

• true

• false

Tags

NGSS.MS-PS1-1

The physical and chemical properties of a compound are usually very different from those of the elements from which it is formed

• True

• False

This type of bonding takes place when elements share electrons in a bond:

• convalent

• ionic

• van der waals

• hydrogen

A potassium atom easily loses its one valence electron. What type of bond will it form with a chlorine atom?

• covalent bond

• ionic bond

• hydrogen bond

• van der waals attractive forces

A molecule in which the charges are unevenly distributed is said to be:

• nonpolar

• polar

• covalent

• molecular

Because a single water molecule may be involved in as many as four hydrogen bonds at the same time, water is extremely.....

• adhesive

• cohesive

• nonpolar

• molecular