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cellular component Outline of their functions

nucleus Contains the DNA. This DNA controls the synthesis of all the proteins required by the
cell (the actual synthesis does not occur in the nucleus). Example: metabolic activities

nucleolus An area within the nucleus responsible for producing ribosomes. It is composed of

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Lysosomes These are specialised forms of vesicles that contain hydrolytic enzymes. They break
down waste material inside cells (including old organelles), also break down pathogens.
Play a role in programmed cell death.

Centrioles A component of the cytoskeleton, present in most eukaryotic cells except fungi
Composed of microtubules. Two centrioles…


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