Unit 1: The Chemistry of Life Review

Front

What is the tertiary structure of a protein?

Back

The tertiary structure of a protein is the final three-dimensional shape formed by the folding and bonding of the R groups of amino acids, which is crucial for the protein's function.

Front

Why is water considered a polar molecule?

Back

Water is considered polar because the electrons are unequally shared between the hydrogen and oxygen atoms due to oxygen's higher electronegativity, resulting in a partial negative charge on oxygen and a partial positive charge on hydrogen.

Front

What is hydrolysis?

Back

Hydrolysis is a chemical process that involves the breaking of a bond in a polymer by the addition of a water molecule, resulting in the formation of smaller molecules.

Front

What are the components of a protein monomer?

Back

A protein monomer, or amino acid, consists of an amine group, a carboxyl group, a central carbon, and an 'R' group (side chain) that varies among different amino acids.

Front

What causes the high specific heat of liquid water?

Back

The high specific heat of liquid water is mainly due to the absorption and release of heat when hydrogen bonds break and form, allowing water to resist changes in temperature.

Front

Define primary structure in proteins.

Back

The primary structure of a protein is the linear sequence of amino acids linked by peptide bonds, which determines the protein's unique characteristics.

Front

What is dehydration synthesis?

Back

Dehydration synthesis is a chemical reaction that involves the formation of a bond between two molecules with the removal of a water molecule, commonly used to form polymers.

Front

Explain the significance of hydrogen bonds in water.

Back

Hydrogen bonds in water are significant because they contribute to water's unique properties, such as high specific heat, cohesion, and adhesion, which are essential for life.

Front

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

Back

The 'R' group in amino acids determines the specific properties and characteristics of each amino acid, influencing the protein's structure and function.

Front

What is the difference between a saturated and unsaturated fat?

Back

Saturated fats have no double bonds between carbon atoms, leading to a straight structure, while unsaturated fats contain one or more double bonds, resulting in a kinked structure.