AP Biology - Unit 1 Review

Front

What is the primary protein structure?

Back

The primary protein structure refers to the unique sequence of amino acids in a polypeptide chain.

Front

What type of bond is formed between the oxygen of one water molecule and the hydrogen of another?

Back

Hydrogen bond.

Front

What does it mean when a reaction is described as having NH3 being formed and decomposed simultaneously?

Back

It indicates that the reaction is in a state of dynamic equilibrium, where the formation and decomposition of NH3 occur at the same rate.

Front

Which part of an amino acid varies among the 20 different amino acids?

Back

The R group (side chain) varies among the 20 different amino acids.

Front

What enzyme is lacking in individuals who are lactose intolerant?

Back

Lactase.

Front

Define covalent bond.

Back

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

Front

What is the role of enzymes in biological reactions?

Back

Enzymes act as catalysts to speed up chemical reactions without being consumed in the process.

Front

Explain the concept of dynamic equilibrium in a chemical reaction.

Back

Dynamic equilibrium occurs when the rate of the forward reaction equals the rate of the reverse reaction, resulting in constant concentrations of reactants and products.

Front

What is the significance of the tertiary structure of proteins?

Back

The tertiary structure determines the overall 3D shape of a protein, which is crucial for its function.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons.