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What process is thought to be involved in the genesis of eukaryotes from prokaryotes?
It is almost certain that DNA-bearing organelles like the mitochondria and the chloroplasts are what remains of ancient symbiotic oxygen-breathing proteobacteria and cyanobacteria, respectively, where the rest of the cell seems to be derived from an ancestral archaean prokaryote cell - a theory termed the endosymbiotic theory.
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Did the evolution of prokaryotes preceed the evolution of eukaryotes?
Yes, prokaryotes are believed to have evolved before eukaryotes. Eukaryotes likely evolved through a process of endosymbiosis, where prokaryotic cells engulfed other prokaryotic cells to form a symbiotic relationship, leading to the development of cellular organelles.
Does photophosphorylation occur in only prokaryotes?
No, photophosphorylation occurs in both prokaryotes and eukaryotes. It is a process in photosynthesis where light energy is used to phosphorylate ADP to ATP. In prokaryotes, it mainly occurs in the thylakoid membranes of the chloroplasts, while in eukaryotes, it occurs in the chloroplasts of plant cells.
Why does replication in prokaryotes differs from replication in eukaryotes?
Replication in prokaryotes differs from replication in eukaryotes for prokaryotic chromosomes have a single origin of replication, whereas eukaryotic chromosomes have many. Eukaryotes and prokaryotes for replication double stranded DNA, four kinds of dNTPS, primers, and origins.
What are the differences in the process of translation between prokaryotes and eukaryotes?
In prokaryotes, translation occurs in the cytoplasm and can start before transcription is complete. In eukaryotes, translation occurs in the cytoplasm but the mRNA must first be processed and transported out of the nucleus before translation can begin. Additionally, eukaryotic ribosomes are larger and more complex than prokaryotic ribosomes.
Transcription and translation can be coupled in prokaryotes but not in eukaryotes justify the staement?
The transcription in eukaryotes, a much more complex process than in prokaryotes. In eukaryotes, transcription and translation take place in different cellular compartments:transcription takes place in the membrane-bounded nucleus, whereas translation takes place outside the nucleus in the cytoplasm. In prokaryotes, the two processes are closely coupled. Indeed, the translation of bacterial mRNA begins while the transcript is still being synthesized. The spatial and temporal separation of transcription and translation enables eukaryotes to regulate gene expression in much more intricate ways, contributing to the richness of eukaryotic form and function.A second major difference between prokaryotes and eukaryotes is the extent of RNA processing. Although both prokaryotes and eukaryotes modify tRNA and rRNA, eukaryotes very extensively process nascent RNA destined to become mRNA. Primary transcripts (pre-mRNA molecules), the products of RNA polymerase action, acquire a cap at their 5′ ends and a poly(A) tail at their 3′ ends. Most importantly, nearly all mRNA precursors in higher eukaryotes are spliced. Introns are precisely excised from primary transcripts, and exons are joined to form mature mRNAs with continuous messages. Some mRNAs are only a tenth the size of their precursors, which can be as large as 30 kb or more. The pattern of splicing can be regulated in the course of development to generate variations on a theme, such as membrane-bound and secreted forms of antibody molecules. Alternative splicing enlarges the repertoire of proteins in eukaryotes and is a clear illustration of why the proteome is more complex than the genome.
What is the difference between prokaryotics and eukaryotics?
Major difference, Prokaryotes have no cell nucleus and eukaryotics do. Prokaryotes have been present before eukaryotes. Eukaryotes are thought to have evolved from prokaryotes throught the process of endosymbiosis.
Did the evolution of prokaryotes preceed the evolution of eukaryotes?
Yes, prokaryotes are believed to have evolved before eukaryotes. Eukaryotes likely evolved through a process of endosymbiosis, where prokaryotic cells engulfed other prokaryotic cells to form a symbiotic relationship, leading to the development of cellular organelles.
Where does the process of making RNA from DNA occur?
nucleus for eukaryotes, cytoplasm for prokaryotes.
How is protein synthesis different in prokaryotes and eurkaryotes?
One way that protein synthesis differs between prokaryotes and eukaryotes is that gene groups that produce proteins are organized into operons in prokaryotes, but they are not organized into operons in eukaryotes. Also, protein synthesis in eukaryotes involves more protein and is a more intricate process than in prokaryotes.
Does photophosphorylation occur in only prokaryotes?
No, photophosphorylation occurs in both prokaryotes and eukaryotes. It is a process in photosynthesis where light energy is used to phosphorylate ADP to ATP. In prokaryotes, it mainly occurs in the thylakoid membranes of the chloroplasts, while in eukaryotes, it occurs in the chloroplasts of plant cells.
Why does replication in prokaryotes differs from replication in eukaryotes?
Replication in prokaryotes differs from replication in eukaryotes for prokaryotic chromosomes have a single origin of replication, whereas eukaryotic chromosomes have many. Eukaryotes and prokaryotes for replication double stranded DNA, four kinds of dNTPS, primers, and origins.
Where does trancription occur?
Transcription is the process of formation of RNA. It takes place in nucleus in eukaryotes and in nucleoid in bacteria or prokaryotes .
Protein synthesis in eukaryotes is similar to the process in prokaryotes in that both eukaryotes and prokaryotes?
Both eukaryotes and prokaryotes use transcription and translation to synthesize proteins. In both processes, the genetic information stored in DNA is converted into RNA molecules, which are then used to assemble amino acids into proteins. However, there are also significant differences between the two processes, such as the presence of introns and exons in eukaryotic genes and the organization of ribosomes during translation.
What are the differences in the process of translation between prokaryotes and eukaryotes?
In prokaryotes, translation occurs in the cytoplasm and can start before transcription is complete. In eukaryotes, translation occurs in the cytoplasm but the mRNA must first be processed and transported out of the nucleus before translation can begin. Additionally, eukaryotic ribosomes are larger and more complex than prokaryotic ribosomes.
Why post-translational modification of protein does not occur in prokaryotes?
Post-translational modifications of proteins do occur in prokaryotes, but they are generally less complex than in eukaryotes. Prokaryotes lack certain cellular compartments where modifications like glycosylation occur in eukaryotes. Additionally, prokaryotes have simpler metabolic pathways that may not require extensive post-translational modifications for protein function.
What is the process of eukaryotic?
Eukaryotes are highly developed cells than prokaryotes. Eukaryotes contain membrane bound cell organelles such as nucleus, mitochondria, ER. Plant and animal cells comes in this category that carres diveres cell function including tranport, digestion, reproduction and so on.
What does your current evidence tell us about the evolution of prokaryotes and eukaryotes?
Prokaryotes are much simpler organisms than eukaryotes. It is thought that eukaryotes evolved from prokaryotes. In both cases the evolution process was lengthy and similar to the evolution of other organisms.
