AP Biology - Unit 1 Review

Front

What is a hydrogen bond?

Back

A hydrogen bond is an attraction between a hydrogen atom of one molecule and an electronegative atom (like oxygen) of another molecule.

Front

What determines the tertiary structure of a protein?

Back

The tertiary structure of a protein is primarily determined by the interactions of the 'R' groups (side chains) of the amino acids.

Front

What does the primary sequence of a protein refer to?

Back

The primary sequence of a protein refers to the order of amino acids in its polypeptide chain.

Front

What happens in a reversible reaction involving NH3?

Back

In a reversible reaction, NH3 is being formed and decomposed simultaneously.

Front

What gives a protein its unique shape?

Back

A protein's unique shape is determined by the unique sequence of amino acids, the folding due to that sequence, and the hydrogen bonding and interactions between the 'R' groups.

Front

Define ionic bond.

Back

An ionic bond is a type of chemical bond formed through the electrostatic attraction between oppositely charged ions.

Front

What is a covalent bond?

Back

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms.

Front

Explain Van der Waals interactions.

Back

Van der Waals interactions are weak attractions between molecules or parts of molecules that result from transient local partial charges.

Front

What is the significance of the 'R' group in amino acids?

Back

The 'R' group, or side chain, determines the properties and characteristics of each amino acid, influencing protein structure and function.

Front

What are α-Helix and β-Pleated Sheet?

Back

α-Helix and β-Pleated Sheet are common secondary structures in proteins formed by hydrogen bonding between backbone atoms.