The Chemistry of Biology

Which of the following is the stored form of carbohydrates in animals?

• cellulose

• starch

• glycogen

• galactose

The alpha helix and beta pleated sheet are examples of

• secondary structure

• quaternary structure

• primary structure

• tertiary structure

Replication is the cellular process that copies the DNA prior to cell division

• True

• False

ATP is best described as

• a double helix

• an enzyme

• the energy molecule of cells

• an electron carrier

All of the following are lipids except

• starch

• phospholipid

• wax

• cholesterol

Isotopes are atoms of the same element that differ in their

• chemical properties

• neutron number

• proton number

• atomic number

Which of the following represents a synthesis reaction?

• AB ---> A + B

• AB + XY ---> AX + BY

• A + B ---> AB

• AB + XY <---> AX + BY

The polynucleotide strands of DNA are linked along their length by ____ bonds.

• double

• Van der Waals

• hydrogen

• covalent

Compared to a solution of pH 9, a solution of pH 7

• has more H+ ions

• has a higher pH

• is more basic

• has no OH- ions

Two or more atoms bonded together are called a/an

• ion

• molecule

• element

• electrolyte