AP Biology: Unit 1 Review (CED)

Front

What is the tertiary structure of a protein?

Back

The tertiary structure of a protein is its final three-dimensional shape, formed by the interactions and bonding of R groups (side chains) of amino acids.

Front

Why is water considered a polar molecule?

Back

Water is considered polar because it has polar covalent bonds, resulting in a partial positive charge on one end (hydrogens) and a partial negative charge on the other end (oxygen).

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

Which macromolecule contains phosphorus?

Back

Nucleic acids, such as DNA and RNA, contain phosphorus as part of their backbone structure.

Front

Which macromolecule contains sulfur?

Back

Proteins contain sulfur, which is found in certain amino acids like cysteine and methionine.

Front

What are the four levels of protein structure?

Back

The four levels of protein structure are primary, secondary, tertiary, and quaternary.

Front

What is the primary structure of a protein?

Back

The primary structure of a protein is the linear sequence of amino acids in a polypeptide chain.

Front

What is the secondary structure of a protein?

Back

The secondary structure of a protein refers to local folded structures that form within a polypeptide due to hydrogen bonding, such as alpha helices and beta sheets.

Front

What is a peptide bond?

Back

A peptide bond is a covalent bond formed between the carboxyl group of one amino acid and the amino group of another, releasing a molecule of water.

Front

What is the significance of R groups in amino acids?

Back

R groups (side chains) determine the properties and functions of amino acids, influencing protein structure and function.