Metabolism, Cell Respiration and Photosynthesis (AHL)
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Metabolism
SubtopicMetabolism under Metabolism, Cell Respiration and Photosynthesis (AHL) for Grade 12 IB.
Preview questions (no answers)
- 1.
How do enzymes affect the activation energy () of a chemical reaction?
A.Enzymes increase the to speed up the reaction.
B.Enzymes have no effect on the .
C.Enzymes provide heat to overcome the .
D.Enzymes lower the required for the reaction to proceed.
- 2.
What is the primary difference between a metabolic chain and a metabolic cycle?
A.Chains are linear sequences of reactions, while cycles regenerate the starting substrate.
B.Chains only occur in prokaryotes, while cycles only occur in eukaryotes.
C.Cycles do not require enzymes, but chains do.
D.Chains always require ATP, while cycles always produce ATP.
- 3.
Where does a competitive inhibitor bind to an enzyme during a metabolic reaction?
A.The allosteric site
B.Anywhere on the surface of the enzyme
C.The active site
D.The phosphate group of the substrate
Download the worksheet for Metabolism, Cell Respiration and Photosynthesis (AHL) - Metabolism to practice offline. It includes additional chapter-level practice questions.
Cell respiration
SubtopicCell respiration under Metabolism, Cell Respiration and Photosynthesis (AHL) for Grade 12 IB.
Preview questions (no answers)
- 1.
What is the net yield of ATP molecules produced from one molecule of glucose during glycolysis?
A.1
B.2
C.4
D.32
- 2.
Which label in the diagram identifies the site where a high concentration of protons () is generated to drive chemiosmosis?
A.A (Matrix)
B.B (Inner membrane)
C.C (Intermembrane space)
D.D (Outer membrane)
- 3.
What is the final electron acceptor in the aerobic electron transport chain?
A.Water
B.Oxygen
C.Carbon dioxide
D.
Download the worksheet for Metabolism, Cell Respiration and Photosynthesis (AHL) - Cell respiration to practice offline. It includes additional chapter-level practice questions.
Photosynthesis
SubtopicPhotosynthesis under Metabolism, Cell Respiration and Photosynthesis (AHL) for Grade 12 IB.
Preview questions (no answers)
- 1.
The provided diagram shows the structure of a chloroplast. Which labeled part represents the site where the enzyme Rubisco is primarily located and the light-independent reactions occur?
A.Structure A
B.Structure B
C.Structure C
D.Structure D
- 2.
Which of the following sets of molecules are the net products of the light-dependent reactions that are subsequently used in the Calvin cycle?
A.ATP and NADPH
B.and glucose
C.and ATP
D.NADPH and
- 3.
What is the primary role of photolysis during the light-dependent stage of photosynthesis?
A.To fix carbon dioxide into glucose
B.To provide replacement electrons for Photosystem II
C.To produce water for the Calvin Cycle
D.To generate heat to speed up enzyme activity
Download the worksheet for Metabolism, Cell Respiration and Photosynthesis (AHL) - Photosynthesis to practice offline. It includes additional chapter-level practice questions.