Biology Module A Practice Q's

Water is a ____ molecule, which lends it to many important properties.

• polar

• nonpolar

• ionic

• metallic

Compounds like H₂O and CO₂ would be ____, while compounds like C₆H₁₂O₆ and C₂H₅O₂N would be ____.

• nonpolar; polar

• polar; nonpolar

• organic; inorganic

• inorganic; organic

Due to maximizing the number of ____ bonds, solid water is actually less dense than liquid water.

• metallic

• hydrogen

• ionic

• covalent

A macromolecule contains the elements C, H, and O. It is a polymer of hexagonal rings, and the elements come out to a ratio of 1:2:1. Which macromolecule would this be?

• carbohydrate

• lipid

• protein

• nucleic acid

A monomer is to a polymer as...

• a polysaccharide is to a monosaccharide

• a nucleotide is to nucleic acid

• a lipid is to a carbohydrate

• a protein is to an amino acid

Which of the following is NOT part of an amino acid?

• amine group

• carboxyl group

• phosphate group

• radical (r) group

The "lock and key" model refers to...

• dehydration synthesis

• monomers and polymers

• an enzyme and a substrate

• hydrolysis

Hydrolysis involves the ____ of water to ____ a polymer.

• removal; breakup

• removal; build

• addition; breakup

• addition; build

Glucose, a carbohydrate monomer, would be referred to as a(n)...

• monolipid

• monosaccharide

• polysaccharide

• amino acid

Biological protein catalysts speed up reactions by...

• lowering activation energy

• increasing the reaction temperature

• decreasing the amount of reactant collisions

• all of these options are correct