EXAM 2 Review

A compound that consists mainly of carbon and hydrogen is known as (a) _____________.

• polymer

• hydrocarbon

• glucose

• organic

A hydrolysis reaction results in ____.

• bond formation of a macromolecule

• bond breakage of a macromolecule

• lipid molecule creation

• nucleic acids creation

An -OH group is a(n) ____ group.

• carboxyl

• hydroxyl

• amino

• carbonyl

The figure above illustrates a ____ reaction that produces one ____ and a ____.

• condensation; hydroxyl; polymer

• condensation; water molecule; polymer

• cleavage; water molecule; monomer

• rearrangement; water molecule; polymer

Sucrose is composed of____.

• two molecules of fructose

• two molecules of glucose

• a molecule of fructose and a molecule of glucose

• a molecule of fructose and a molecule of galactose

Glycogen is a polysaccharide used for energy storage by ____.

• animals

• plants

• protists

• bacteria

Cellulose is ____

• a polysaccharide found in cell walls of plants

• a component of cell membranes

• an oligosaccharide found in animals

• formed by hydrolysis of monosaccharides

Lipids ____.

• yield less energy per gram than do carbohydrates

• include cartilage and chitin

• include fats consisting of three fatty-acid molecules and one glycerol molecule

• are only found in animals

The order of amino acids is the ____ structure of proteins.

• primary

• secondary

• tertiary

• quaternary

Which of the following is true about phospholipid bilayers?

• The hydrophobic head faces the cell exterior.

• The polar heads face the cell interior and exterior.

• The hydrophobic tail faces the cell interior.

• The polar tails face the cell interior and exterior.