AP Biology: Unit 1 Review (CED)

Front

What is hydrogen bonding in water molecules?

Back

Hydrogen bonding in water molecules refers to the attraction between the positively charged hydrogen atoms of one water molecule and the negatively charged oxygen atom of another water molecule, leading to properties like cohesion, adhesion, and surface tension.

Front

What are the components of a nucleic acid monomer?

Back

A nucleic acid monomer consists of a pentose sugar, a nitrogenous base, and a phosphate group. Amino acids are not part of nucleic acid monomers.

Front

Why is water considered a polar molecule?

Back

Water is considered polar because it has polar covalent bonds, where the electrons are shared unequally between the oxygen and hydrogen atoms, resulting in a partial negative charge on the oxygen and partial positive charges on the hydrogens.

Front

What is dehydration synthesis?

Back

Dehydration synthesis is a chemical reaction that involves the formation of a bond between two monomers with the removal of a water molecule.

Front

What is the role of the carboxyl group in peptide bond formation?

Back

The carboxyl group of one amino acid reacts with the amino group of another amino acid to form a peptide bond, linking the two amino acids together.

Front

Define cohesion in the context of water molecules.

Back

Cohesion is the property of water that allows water molecules to stick to each other due to hydrogen bonding, resulting in surface tension.

Front

Define adhesion in the context of water molecules.

Back

Adhesion is the property of water that allows it to stick to other substances, which is important for processes like capillary action.

Front

What is surface tension in water?

Back

Surface tension is the cohesive force at the surface of water that makes it behave like a stretched elastic membrane, allowing small objects to float.

Front

What is hydrolysis?

Back

Hydrolysis is a chemical reaction that involves the breaking of a bond in a polymer by the addition of water, resulting in the formation of monomers.

Front

What are the four main types of biological macromolecules?

Back

The four main types of biological macromolecules are carbohydrates, lipids, proteins, and nucleic acids.