What determines whether a neuron is unipolar, bipolar, or multipolar? draw an example of each.

The correct answer will be neurite (protoplasmic projections).

Neurons can be divided on the basis of differences in the projections of the cell:

1. Unipolar neurons: neurons with only a single projection that functions as both axon and dendrites. They direct impulse in only one direction which are common in invertebrates and at embryonic stage.

2. Bipolar neurons- neurons with two projections of which one act as dendrites and one acts as axons. They are common in sensory organs like the eye and nose where they send signals from the sensory cells to spinal cord and brain.

3. Multipolar neurons - neurons with multiple projections which become multiple dendrites but one axon. They are found in CNS where impulse enter through dendrite and are directed in one particular direction.

Thus,  neurite (protoplasmic projections) is the correct answer.

you are certainly talking about this picture:

a: is the label of the white square, it is showing the  replication fork, formed by helicase (d) ==> so it is the site of dna separation and replication 

b: is a new dna brand that is following directly the replication fork, so it is continuous ==> built continuously from 5' to 3

c: dna polymerase cannot replicate dna on its own, it needs the of their proteins, and one of them plays the role of a clamp which fixes  the dna with the dna template and increases  the processivity of the enzyme. ==>   stops polymerase from falling off the  template.

d: is the enzyme responsible for forming the replication fork (helicase) ==> unwinds and separates dna into two strands

e: is the delayed strand, it is built  in the opposite sense of the helicase, so dna will be built in fragments ==> built  fragments from 5' to 3 joins

and finally f: is the enzyme that builds  the new dna strand (dna polymerase) ==>   adds nucleotides to make a new dna helix.

credit: gradman555p98x9p

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