The fast axoplasmic transport includes proteins from the and transported on the slow axoplasmic transport includes proteins from the
a. rer, microtubules, cytoplasm
b. microtubules, cytoplasm, rer
c. cytoplasm, rer, microtubules
d. cytoplasm, rer, microtubules

a. RER, microtubules, cytoplasm

Explanation:

The axoplasmic transport or axonal transport that moves the material at the rate of 1-5 mm/day is called slow axoplasmic transport. This system serves to deliver the materials required for regeneration of axons and axoplasm. It includes the movement of proteins from cytoplasm along the axon.

On the other hand, the fast axoplasmic transport moves the material at the rate of 200-400 mm/day. It serves to transport integral membrane proteins and secretory proteins formed on RER. The fast movement occurs with the help of motor proteins that move the material along the surface of microtubules present in the cytoskeleton of neurons.  

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