Sage-Tips

What method is used by eukaryotes but not prokaryotes to control gene expression?

So transcription and its regulation in prokaryotics is much simpler. But the eukaryotes have to transcribe and then have a process for mRNA processing like capping, splicing and adding ply adenine tail, and then have a special mechanism to transport the processed mature mRNA to the cytoplasm from the nucleus.

How is gene regulation in prokaryotes and eukaryotes similar how is it different?

Generally, prokaryotic gene expression is regulated at transcriptional level while eukaryotic gene expression is regulated in both transcriptional and translational levels.

What is the difference between eukaryotic and prokaryotic gene structure?

The main difference between prokaryotic and eukaryotic gene structure is that the prokaryotic gene structure consists of operons and clusters of several functionally-related genes, whereas the eukaryotic gene structure does not contain operons.

How do prokaryotes produce proteins?

In prokaryotes, protein synthesis, the process of making protein, occurs in the cytoplasm and is made of two steps: transcription and translation. In transcription, sections of DNA called operons are transcribed to mRNA in the cytoplasm by RNA polymerase.

How are genes regulated in prokaryotes and eukaryotes?

Therefore, in prokaryotic cells, the control of gene expression is mostly at the transcriptional level. Eukaryotic gene expression is regulated during transcription and RNA processing, which take place in the nucleus, and during protein translation, which takes place in the cytoplasm.

How are genes regulated in eukaryotes?

Gene expression in eukaryotic cells is regulated by repressors as well as by transcriptional activators. Like their prokaryotic counterparts, eukaryotic repressors bind to specific DNA sequences and inhibit transcription.

How is gene expression in prokaryotes and eukaryotes?

Prokaryotic gene expression (both transcription and translation) occurs within the cytoplasm of a cell due to the lack of a defined nucleus; thus, the DNA is freely located within the cytoplasm. Eukaryotic gene expression occurs in both the nucleus (transcription) and cytoplasm (translation).

How are genes organized in prokaryotes?

Genetic information in prokaryotic cells is carried on a single circular piece of DNA which is attached to the cell membrane and in direct contact with the cytoplasm. There are no special proteins associated with this DNA molecule. Plasmids. Some prokaryotes also carry smaller circles of DNA called plasmids.

What are the functions of specific genes in eukaryotes?

The set of genes expressed in a cell determines the set of proteins and functional RNAs it contains, giving it its unique properties. In eukaryotes like humans, gene expression involves many steps, and gene regulation can occur at any of these steps.

How do prokaryotes produce proteins How do eukaryotes produce proteins?

Prokaryotes can translate mRNA into proteins while the DNA is being transcribed. Eukaryotes must end transcription of given segment, send it out of nucelus and only then translate it.

How do eukaryotic cells produce proteins?

Eukaryotes produce these proteins through a process called protein synthesis. Protein synthesis is a multistep process where cells use the message contained in their DNA to create protein molecules. This protein synthesis involves two major steps called transcription and translation.

How do eukaryotic cells regulate protein production?

Gene expression in eukaryotic cells is regulated by repressors as well as by transcriptional activators. Like their prokaryotic counterparts, eukaryotic repressors bind to specific DNA sequences and inhibit transcription. Other repressors compete with activators for binding to specific regulatory sequences.