Enzyme Structure and Function

What is the primary function of enzymes in biological systems?

Enzymes are always made of only one polypeptide chain.

What is the specific region on an enzyme where the substrate binds?

The _____ model describes how the enzyme and substrate change shape upon binding.

Match the following terms with their corresponding descriptions:

What happens to an enzyme when it undergoes denaturation?

Enzymes are primarily composed of globular proteins.

What is the bare minimum of energy required for a chemical reaction to occur?

Enzymes ______ the activation energy of biochemical reactions.

What is the primary factor determining the rate of enzyme activity?

A higher substrate concentration always leads to a faster reaction rate for an enzyme.

Match the following terms with their definitions:

Explain how enzymes facilitate chemical reactions.

The collision frequency always increases as substrate concentration increases.

What happens to the reaction rate when the enzyme's active sites are saturated with substrate molecules?

The ______ of an enzyme is the specific condition (temperature or pH) where it functions most effectively.

Which of the following factors influences enzyme activity?

According to collision theory, why is it necessary for substrate molecules to collide with enzyme active sites?

Adding more enzyme to a reaction mixture always increases the reaction rate.

What is the most likely outcome of increasing the temperature significantly above an enzyme's optimum temperature?

Proteins are polymers made by joining amino acids through peptide bonds, which are formed through a hydrolysis reaction.

What is the primary structure of a protein determined by?

The process of breaking down large molecules into smaller ones is called ______.

Explain how temperature can affect the structure and function of a protein.

What is the primary role of enzymes in metabolic reactions?

Increasing the temperature always increases the rate of an enzyme-catalyzed reaction.

Describe the relationship between substrate concentration and the rate of an enzyme-catalyzed reaction.

The process of breaking down complex molecules into simpler ones with the addition of water is called ______.

Match the following enzyme types with their respective roles in metabolic processes:

Anabolic reactions are energy-releasing processes.

Which of the following is an example of an anabolic process?

Which of the following is NOT a type of interaction that contributes to the tertiary structure of a protein?

The optimum pH for most enzymes is 7, which is a neutral pH.

What are the two main types of secondary protein structures?

The process of unfolding or breaking down a protein is called ______.

Match the level of protein structure with its corresponding description:

Which level of protein structure is primarily responsible for the overall shape and stability of the protein?

Disulfide bridges are a type of ionic bond that contributes to the tertiary structure of proteins.

What is the significance of the primary structure of a protein?