Chapter Test: The Chemistry of Life

Front

What property of a water molecule allows hydrogen bonds to form among adjacent molecules?

Back

the polarity of the molecule, which involves a slightly negative oxygen atom and slightly positive hydrogen atoms

Front

Household bleach has a pH between 12 and 13. From this information, which of the following BEST describes the bleach solution?

Back

The solution is basic, meaning it has fewer hydrogen (H⁺) ions than hydroxide (OH⁻) ions.

Front

What best describes the relationship between starch and glucose?

Back

Starch is a polymer made of glucose monomers.

Front

How do any two types of amino acids differ from one another?

Back

the chemical structure of the R group in the molecule

Front

In a chemical reaction, which event ALWAYS occurs as the reaction proceeds?

Back

the rearrangement of electrons to break or form chemical bonds

Front

Which type of macromolecule has the function of storing and transmitting hereditary or genetic information? Options: lipid, carbohydrate, nucleic acid, protein

Back

nucleic acid

Front

How do buffers in the blood affect the pH?

Back

Buffers prevent small amounts of acid or base from changing the pH of blood.

Front

What allows the three atoms in a water molecule to stay together?

Back

covalent bonds formed by shared electrons between atoms

Front

What event changes an atom into an ion?

Back

the gain or loss of one or more electrons

Front

Hobie draws a model of a carbon atom. Which change to the model would improve its accuracy?

Back

Move the protons and neutrons to a small space in the center.