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The figure below is a fine structure of a generalized animal cell as seen under an electron microscope.

(a) Name the parts labeled A and B.
(b) How is the structure labeled B adapted to its function?

Answer Text:
a)- A-Nuclear pore
- B-rough endoplasmic reticulum.
b)- It has interconnected channels running through cytoplasm for transport of proteins.
- Its surface is covered with ribosomes which is site for protein synthesis.