Understanding Enzymes and Macromolecules

What is the primary function of enzymes in biological systems?

• To provide structural support

• To speed up chemical reactions

• To store genetic information

• To transport oxygen

Which of the following is a type of macromolecule?

• Water

• Protein

• Carbon dioxide

• Sodium chloride

What is the role of activation energy in a chemical reaction?

• It is the energy required to start a reaction

• It is the energy released by a reaction

• It is the energy stored in products

• It is the energy absorbed by reactants

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Which macromolecule is primarily responsible for storing genetic information?

• Lipids

• Proteins

• Nucleic acids

• Carbohydrates

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What are the building blocks of proteins?

• Monosaccharides

• Fatty acids

• Amino acids

• Nucleotides

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Which of the following is NOT a macromolecule?

• Lipids

• Proteins

• Water

• Carbohydrates

What is the effect of an enzyme on the activation energy of a reaction?

• It increases the activation energy

• It decreases the activation energy

• It has no effect on the activation energy

• It doubles the activation energy

Which macromolecule is primarily used for energy storage in animals?

• Proteins

• Nucleic acids

• Carbohydrates

• Lipids

What is the basic building block of carbohydrates?

• Amino acids

• Monosaccharides

• Fatty acids

• Nucleotides

Which of the following is a characteristic of enzymes?

• They are consumed in the reaction

• They are specific to substrates

• They are made of nucleotides

• They are inorganic molecules