AP Bio Final Rev Biochem

Front

Why does ice float?

Back

As water freezes, it expands and its density decreases.

Front

What property of water allows it to be an excellent solvent?

Back

As a polar molecule, it can surround and dissolve ionic and polar molecules.

Front

Where does pepsin function best in the human body?

Back

Stomach.

Front

How can an amino acid change at a site distant from the active site of an enzyme alter its substrate specificity?

Back

By changing the shape of the protein.

Front

What type of macromolecule is a fatty acid?

Back

Fatty Acid.

Front

What is the primary function of enzymes in biological systems?

Back

To catalyze biochemical reactions, increasing the rate of reactions.

Front

What is the role of hydrogen bonds in water?

Back

They contribute to water's unique properties, such as cohesion and high specific heat.

Front

What is the difference between a saturated and unsaturated fatty acid?

Back

Saturated fatty acids have no double bonds between carbon atoms, while unsaturated fatty acids have one or more double bonds.

Front

What is the pH range for pepsin to function optimally?

Back

Pepsin functions best in acidic conditions, typically around pH 1.5 to 2.

Front

What is the significance of the active site of an enzyme?

Back

The active site is where substrate molecules bind and undergo a chemical reaction.