Use microscopy observations to calculate magnification and produce accurate biological drawings with appropriate scale and structural detail in Cambridge A Level Biology questions.
Alveolar macrophages are cells of the immune system that remain in the alveolar region of the gas exchange system. The macrophages protect against infection caused by pathogens that have been inhaled.
Alveolar macrophages have the same cell structures as typical animal cells.
Fig. 2.1 is a diagram of an alveolar macrophage showing:
- some of the cell structures that would be visible using an electron microscope
- a newly formed phagocytic vacuole (phagosome) containing two cells of Mycobacterium tuberculosis.
Fig. 2.1
The cell structures with the functions described in Table 2.1 are not shown in Fig. 2.1.
Complete Fig. 2.1 by drawing and labelling the cell structures described in Table 2.1.