DP Biology (first assessment 2025)

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Question 23M.2.HL.TZ1.a

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Date May 2023 Marks available [Maximum mark: 5] Reference code 23M.2.HL.TZ1.a
Level HL Paper 2 Time zone TZ1
Command term Explain Question number a Adapted from N/A
a.
[Maximum mark: 5]
23M.2.HL.TZ1.a

Explain how vesicles are used by cells to move materials.

[5]

Markscheme
  1. fluidity of membranes allows vesicles to bud off membranes/fuse with membranes;
  2. materials taken into cells by endocytosis/vesicle formation;
  3. Paramecium takes in food / phagocytes engulf pathogens / another example;
  4. materials released from cells by exocytosis/by vesicle fusing with plasma membrane;
  5. neurotransmitter released at synapses / protein secretion / secretion from gland cell / another example;
  6. movement/transport of materials (inside vesicles) within cells/through the cytoplasm/between organelles/from an organelle to the (plasma)membrane/from the (plasma) membrane to an organelle;
  7. movement of proteins from the rough ER to the Golgi / another example;

Syllabus sections