Where does transcription take place in the prokaryotic cell?

Question

some more questions...

Where are alpha-tubulin and beta-tubulin located in the cell?
those are the components of microtubules

Does messenger RNA contain exons and introns?

Answer 1

A prokaryotic cell doesn't have a nucleus, thus transcription occurs in the cytoplasm.

Prokaryotes DO NOT have alpha and beta tubulin. Prokaryotes were thought not to have microtubules at all, until the discovery of a tubulin-like prokaryotic protein (FtsZ). In eukaryotes, you find tubulin in the cytoplasm.

Prokaryotes do not have introns and exons; their genes are continuous. Only eukaryotes have introns and exons.
In the primary RNA transcript there are both intron and exons. While the primary RNA transcript is still in the nucleus it undergoes splicing, a process which removes introns and joins the exons in order to form a mature mRNA. This mature mRNA is exported from the nucleus to the cytosol for protein synthesis.

Answer 2

In prokaryots dna replication there is largely one polymerase.Prokaryotes even have one beginning of replication or as eukaryots have diverse origins of replication.genes in prokaryots are arranged in 2 clusters called operons and those contain all the fundamental transcription components and so on.

Answer 3

transcription, the production of a mRNA strand from a DNA template, takes place along the bacterial chromosone.

alpha/beta-tubulin are part of the cell's cytoskeleton in both prokaryoptic and eukarotic cells. In paticular, microtubles are vital for flagellum: tails that strech out from the cell and rotate to propel the cell forward.

In prokaryotic cells, they have no mechansim to spice out introns from mRNA. Eukaroyotes have spliceosomes, giant catalytic RNA structres, that splice out introns before the mRNA reaches the ribosomes.

Answer 4

For the second questions, I don't think mRNA contains introns... as exons are the information that is going to be expressed. After all you would't want to make a protien full of junk information.

Answer 5

i think its in the ribosomes, not sure tho