Q: Bread baking from flour, yeast, and water is an example of which type of metabolic process?

Anabolic, because it assembles small molecules into a larger product and requires energy.

Q: Which of the following best describes the role of ATP in cellular metabolism?

ATP provides the immediate source of energy for cellular work.

Q: Which of the following statements about enzymes is correct?

Enzymes lower the activation energy of a reaction.

Q: A competitive inhibitor affects an enzyme by:

Binding to the active site and blocking substrate binding.

Q: Which of the following is an example of feedback inhibition in a metabolic pathway?

The end product of a pathway binds to the first enzyme and inhibits its activity.

Q: Which of the following best describes an exergonic reaction?

A reaction that releases energy and has $\Delta G < 0$.

Q: Which of the following is true about coupled reactions in cells?

An exergonic reaction provides energy to drive an endergonic reaction.

Question 1

Which of the following best describes an anabolic pathway in metabolism?

Accepted Answer

A pathway that assembles small molecules into larger ones, requiring an input of energy.

Question 2

According to the First Law of Thermodynamics, which of the following statements is true?

Accepted Answer

Energy can be transformed from one form to another, but the total amount remains constant.

Question 3

A student rolls a rock up a hill and lets it go. At the top of the hill, the rock has maximum potential energy. As it rolls down, what type of energy increases?

Accepted Answer

Kinetic energy

Question 4

Which equation correctly represents the change in free energy ($\Delta G$) for a reaction?

Accepted Answer

$\Delta G = \Delta H - T\Delta S$

Question 5

Which of the following reactions is most likely to be spontaneous?

Accepted Answer

A reaction with $\Delta G < 0$

Question 6

Bread baking from flour, yeast, and water is an example of which type of metabolic process?

Accepted Answer

Anabolic, because it assembles small molecules into a larger product and requires energy.

Question 7

Which of the following best describes the role of ATP in cellular metabolism?

Accepted Answer

ATP provides the immediate source of energy for cellular work.

Question 8

What happens when ATP is hydrolyzed to ADP and inorganic phosphate ($P_i$)?

Accepted Answer

Energy is released.

Question 9

Which of the following statements about enzymes is correct?

Accepted Answer

Enzymes lower the activation energy of a reaction.

Question 10

A competitive inhibitor affects an enzyme by:

Accepted Answer

Binding to the active site and blocking substrate binding.

Question 11

Which of the following is an example of feedback inhibition in a metabolic pathway?

Accepted Answer

The end product of a pathway binds to the first enzyme and inhibits its activity.

Question 12

Which of the following best describes an exergonic reaction?

Accepted Answer

A reaction that releases energy and has $\Delta G < 0$.

Question 13

Which of the following is true about coupled reactions in cells?

Accepted Answer

An exergonic reaction provides energy to drive an endergonic reaction.

Question 14

Which of the following factors can affect enzyme activity?

Accepted Answer

Temperature, pH, cofactors, and coenzymes

Question 15

Allosteric regulation of an enzyme involves:

Accepted Answer

A regulatory molecule binding to a site other than the active site, changing the enzyme's shape.

Question 16

Which of the following best explains why enzymes are specific to their substrates?

Accepted Answer

The shape of the enzyme's active site is complementary to the substrate.

Question 17

A reaction has $\Delta G = +15$ kJ/mol. Which of the following is true?

Accepted Answer

The reaction is endergonic and requires energy input.

Question 18

Which of the following is NOT a function of ATP in the cell?

Accepted Answer

Storing genetic information

Question 19

Which of the following best describes the induced fit model of enzyme function?

Accepted Answer

The enzyme changes shape slightly to fit the substrate more closely when it binds.

Question 20

A patient has a genetic mutation that causes their enzymes to denature at normal body temperature. Which of the following is most likely to occur?

Accepted Answer

Their metabolic reactions will slow down or stop, leading to severe health problems.

Chapter 8: An Introduction to Metabolism – Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards