8 a. The organelles labelled A are mitochondria.
b. The name of the dark round organelle labelled B is nucleolus.
c. The name of the long thin structures labelled C is microtubules
(They help support the cell).
d. The name of the large circular organelle labelled D is nucleus.
e. The name of the structure labelled E is vacuole.
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Long & Slichter