Enzymes and Energy Quiz

What is the primary role of enzymes in chemical reactions?

• To act as a reactant in the reaction

• To increase the activation energy required

• To change the products of the reaction

• To lower the activation energy required

Which of the following is true about enzymes?

• They are carbohydrates

• They work best at any pH and temperature

• They are specific to the reactions they catalyze

• They are consumed in the reaction

What is an endergonic reaction?

• A reaction that absorbs energy

• A reaction that occurs without enzymes

• A reaction that releases energy

• A reaction that does not involve energy

In an exergonic reaction, what happens to the energy level of the products compared to the reactants?

• It fluctuates

• It remains the same

• It is lower

• It is higher

What is the role of ATP in cells?

• To transfer and release energy

• To act as a structural component

• To store genetic information

• To catalyze reactions

What are the components of an ATP molecule?

• Thymine, ribose, and four phosphate groups

• Adenine, ribose, and three phosphate groups

• Guanine, deoxyribose, and two phosphate groups

• Cytosine, ribose, and one phosphate group

How is energy released from ATP?

• By converting ribose to glucose

• By breaking the bond between the outer phosphates

• By adding a phosphate group

• By breaking the bond between adenine and ribose

What is the significance of the wavy lines between the phosphates in ATP?

• They show the molecule's polarity

• They represent high-energy bonds

• They denote the molecule's stability

• They indicate low-energy bonds

How often can the conversion between ATP and ADP occur in some cells?

• 100 times per second

• 10 million times per second

• 10 times per second

• Once per second

Why is ATP compared to a battery?

• Because it stores and releases energy

• Because it is rechargeable with water

• Because it is made of metal

• Because it is used in electrical circuits