Enzymes

What are enzymes?

• Biological activators

• Biological catalysts

• Biological inhibitors

• Biological enhancers

How do enzymes accelerate chemical reactions?

• By increasing activation energy

• By altering equilibrium

• By increasing substrate concentration

• By decreasing activation energy

What are enzymes mainly composed of?

• Proteins
• Nucleic acids
• Amino acids
• Nucleotides

How are complex enzymes different from simple enzymes?

• They consist of more amino acids

• They catalyze fewer reactions

• They consist of both protein and non-protein parts

• They are found only in eukaryotic cells

What factors can affect or control enzyme activity?

• Enzyme size

• Genetic mutations

• pH and temperature

• ATP levels

Enzymes are specialized proteins that can only catalyze reactions by building up new molecules.

• True
• False

Enzymes and chemical catalysts both increase the rate of a chemical reaction but do not change in the overall process

• • True

• • False

Enzymes are highly specific to the reactions they catalyze, whereas chemical catalysts can react with a variety of substrates

• • True

• • False

Ribozymes are a type of enzyme composed of proteins.

• • True

• • False

Enzymes are made up principally of chains of amino acids linked together by peptide bonds.

• • True

• • False