CAIE A Level Biology 9700 · Cell structure

Cell structure: compare question

Compare5 marksChallenge

The table below shows some features of a bacterial cell (a prokaryote) and a leaf palisade cell (a eukaryote).

FeatureBacterial cellLeaf palisade cell
Size (typical diameter)2 µm50 µm
NucleusAbsent (nucleoid region)Present, with nuclear envelope
Ribosomes70S80S
Cell wall compositionPeptidoglycanCellulose
Membrane-bound organellesNoneMitochondria, Golgi, ER, etc.
DNA structureCircular, free in cytoplasmLinear, enclosed in nucleus

Using the information in the table and your knowledge of cell structure, compare prokaryotic and eukaryotic cells. In your answer, refer to at least three differences and one similarity (where applicable), and explain how these differences relate to the cells' functions.

0 words · 5 marks

No account needed for your first marks. Your answer is used only to mark it.

How this question is marked

5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.

Compare means: Give similarities or differences between two things, and say which side each point belongs to. Write each point as a pair, for example: A is X, whereas B is Y. Two separate descriptions rarely earn the marks.

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