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DP IB Biology: HL

Topic Questions

Home / IB / Biology: HL / DP / Topic Questions / 8. Metabolism, Cell Respiration & Photosynthesis (HL Only) / 8.3 Photosynthesis / Multiple Choice: Paper 1


8.3 Photosynthesis

Question 1

Marks: 1

The diagram below shows the Calvin cycle of the light-independent reactions.

13-1-fig-5-1

Which of the following correctly identifies compound M to P?

  M N O P
A. carbon dioxide ribulose bisphosphate glycerate 3-phosphate glucose
B. carbon dioxide glycerate 3-phosphate ribulose bisphosphate glucose
C. Rubisco glycerate 3-phosphate ribulose bisphosphate triose phosphate
D. carbon dioxide triose phosphate glycerate 3-phosphate ribulose bisphosphate
    Choose your answer
      

    Question 2

    Marks: 1

    The following steps describe non-cyclic photophosphorylation involving the electron transport chain.

    1. Electrons from the photolysis of water replace lost electrons from photosystem II
    2. Light passes to primary pigments in photosystem I and II
    3. Electrons are passed from photosystem II to photosystem I via electron transport chain
    4. Energy is released to synthesise ATP
    5. Electrons are excited to a higher energy level

    Which of the following represents the correct sequence of the steps?

    • II. → V. → IV. → III. → I.

    • V. → IV. → III. → II. → I.

    • II. → V. → III. → IV. → I.

    • V. → III. → IV. → II. → I.

    Choose your answer
      

    Question 3

    Marks: 1

    The following molecules are all involved with the process of photosynthesis.

    1. Glucose
    2. ATP
    3. Water
    4. Reduced NADP
    5. Carbon dioxide

    Which of these molecules are involved with both the light dependent and light independent reactions?

    • I. and III.

    • II. and IV.

    • I., II. and IV.

    • II., IV. and V.

    Choose your answer
      

    Question 4

    Marks: 1

    Which of the following provides the best explanation of the process illustrated in the diagram?8-3_q4h

    • Photosystem I and ferredoxin is involved with the reduction of NADP so that the hydrogen can be used during the light independent stage of photosynthesis

    • Photosystem II and ferredoxin is involved with the reduction of NADP so that the hydrogen can be used during the light independent stage of photosynthesis

    • Photosystem I and plastoquinone is involved with the reduction of NADP so that the hydrogen can be used during the light independent stage of photosynthesis

    • Photosystem I and ferredoxin is involved with the reduction of NADP so that the hydrogen can be used during the light dependent stage of photosynthesis

    Choose your answer
      

    Question 5

    Marks: 1

    Which of the following statements is not correct with regards to chemiosmosis in photosynthesis?

    1. Protons move down their concentration gradient through ATP synthase located in the chloroplast membrane
    2. The photolysis of water provides protons needed for chemiosmosis to occur
    3. ADP is phosphorylated to ATP due to the energy released by the movement of electrons down the electron transport chain
    4. A high concentration of protons build up outside the intermembrane space, creating a concentration gradient
    • I. and IV. only

    • II. and III. only

    • I., III. and IV.

    • II., III. and IV.

    Choose your answer