Biomolecules and Enzymes Review

What are substrates in enzyme reactions?

• Substrates are the products formed after an enzyme reaction.

• Substrates are the reactants that enzymes act upon during a chemical reaction.

• Substrates are the enzymes that catalyze reactions.

• Substrates are the inhibitors that prevent enzyme activity.

What is the role of enzymes in biochemical reactions?

• Enzymes are proteins that act as catalysts to speed up chemical reactions by lowering the activation energy required.

• Enzymes are carbohydrates that provide energy for biochemical reactions.

• Enzymes are lipids that store genetic information in cells.

• Enzymes are minerals that help in the absorption of nutrients.

What is a product in a chemical reaction?

• A substance that is formed as a result of a chemical reaction.

• A reactant that undergoes change during the reaction.

• A catalyst that speeds up the reaction process.

• A byproduct that is not useful in the reaction.

What is the significance of enzyme specificity?

• Enzyme specificity allows enzymes to catalyze any reaction they encounter.

• Enzyme specificity ensures that enzymes only catalyze specific reactions, preventing unwanted side reactions.

• Enzyme specificity increases the temperature at which reactions occur.

• Enzyme specificity is irrelevant to the overall metabolic processes.

What is denaturation in proteins?

• A process where proteins gain additional functions

• The process where proteins lose their structure and function due to external stress, such as heat or pH changes.

• A method of protein synthesis in the ribosome

• The natural folding of proteins into their functional shapes.

What are the four main types of biomolecules?

• Carbohydrates, proteins, lipids, and nucleic acids

• Vitamins, minerals, carbohydrates, and proteins

• Carbohydrates, proteins, enzymes, and nucleic acids

• Lipids, proteins, carbohydrates, and hormones

What is activation energy?

• The energy required to break chemical bonds in a reaction.

• The minimum amount of energy required to initiate a chemical reaction.

• The energy released during a chemical reaction.

• The energy needed to maintain a reaction at equilibrium.

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What is the primary function of carbohydrates?

• To serve as a source of energy and structural support in cells.

• To act as enzymes in biochemical reactions.

• To store genetic information in the form of DNA.

• To facilitate the transport of oxygen in the blood.

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What are nucleic acids?

• Biomolecules that store and transmit genetic information, such as DNA and RNA.

• Proteins that catalyze biochemical reactions.

• Lipids that provide energy storage and insulation.

• Carbohydrates that serve as structural components in cells.

What are lipids and their functions?

• Lipids are hydrophobic molecules that store energy, form cell membranes, and act as signaling molecules.

• Lipids are water-soluble molecules that primarily function in digestion.

• Lipids are proteins that help in muscle contraction and energy production.

• Lipids are carbohydrates that provide structural support to cells.