The cells of all living organisms share some common features.
State two such features.
(2)
Matthias Schleiden and Theodor Schwann came up with the cell theory in 1837.
Which of the following is not one of the main ideas of this theory?
(1)
☐ | A | All living organisms are made up of one or more cells | |
☐ | B | Different cell types contain different structural elements | |
☐ | C | New cells are produced from cells that already exist | |
☐ | D | Cells are the basic structural and functional unit of life |
The following diagram shows the structure of a unicellular organism called Chlamydomonas.
Identify this cell as eukaryotic or prokaryotic.
(1)
Give a reason for your answer at part (i).
(1)
Chlamydomonas are typically 10 µm in diameter. A student uses a cm ruler to measure the diameter of the Chlamydomonas in the diagram.
Calculate the magnification of the diagram.
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