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What does synthesis protein mean?
= Protein Synthesis = ----Legend:Process whereby DNA encodes for the production of amino acids and proteins. This process can be divided into two parts:1. TranscriptionBefore the synthesis of a protein begins, the corresponding RNA molecule is produced by RNA transcription. One strand of the DNA double helix is used as a template by the RNA polymerase to synthesize a messenger RNA (mRNA). This mRNA migrates from the nucleus to the cytoplasm. During this step, mRNA goes through different types of maturation including one called splicingwhen the non-coding sequences are eliminated. The coding mRNA sequence can be described as a unit of three nucleotides called a codon. 2. TranslationThe ribosome binds to the mRNA at the start codon (AUG) that is recognized only by the initiator tRNA. The ribosome proceeds to the elongation phase of protein synthesis. During this stage, complexes, composed of an amino acid linked to tRNA, sequentially bind to the appropriate codon in mRNA by forming complementary base pairs with the tRNA anticodon. The ribosome moves from codon to codon along the mRNA. Amino acids are added one by one, translated into polypeptidic sequences dictated by DNA and represented by mRNA. At the end, a release factor binds to the stop codon, terminating translation and releasing the complete polypeptide from the ribosome. One specific amino acid can correspond to more than one codon. The genetic code is said to be degenerate.
What is made in transcription?
mRNA is made. Messenger (Ribose Nucleic-Acid). mRNA is a single strand of RNA made from the template strand of DNA. The mRNA is a exact copy of the coding or sense strand of DNA. The only difference between the produced RNA and DNA is the DNA has deoxyribose as its backbone sugar, and all Thymines have are replaced with Uracil.
Can sharks get through locks in rivers?
Only if they have the key!
Do bees only communicate through dancing?
No, that's only one of their methods. They use a number of different pheromones for various purposes.
Does a horse pant?
No horses can't pant. This is because the have no epoglottis in their throat which would enable them to breathe and eat through their mouths. They can only breate through their nose, and they can only eat through their mouths. They do breathe heavily through their noses though when they get hot.
Is a entire chromosome made into an mRNA during transcription?
No, during transcription, only a segment of a chromosome, known as a gene, is transcribed into mRNA. The mRNA carries the code for a specific protein that will be translated by the ribosomes.
Intervening DNA sequences that are transcribed and then removed from the final mrna is called?
Introns are intervening DNA sequences that are transcribed but then removed from the pre-mRNA during RNA processing. This process, called splicing, results in the mature mRNA containing only the exons which are the coding sequences that are retained and translated into proteins.
How does the mRNA leave the nucleus?
it exits through the nucleus through a nuclear pore and enters the cytoplasm of the cell. The mRNA will then move to a ribosomes. Where the next stage of protein synthesis will occur, Translation.
Are both intron and exon regions are transcribed into the primary transcript?
Yes, both intron and exon regions are transcribed into the primary transcript during transcription. However, only the exons are retained in the processed mRNA after introns are removed through the process of splicing.
Which nucleic acid can be a gene?
A gene is a segment only on DNA. A gene transcribed to mRNA is usually no longer referred to as a gene.
What r two basic steps of polypeptide synthesis?
The 2 basic steps of polypeptide synthesis are:Transcription - the synthesis of mRNA from a DNA template. Only one strand of DNA is copied, and a single gene may be transcribed thousands of times.Translation - the process where ribosomes synthesize proteins using the mature mRNA transcript produced during transcription. The ribosome attaches to mRNA, and then moves along the mRNA adding amino acids to the growing polypeptide chain.
What is concept of mRNA?
Messenger RNA id transcribed from the DNA of the nucleus and then, after modification, leaves the nucleus. The mRNA is then threaded through a ribosome where translation takes place. A transfer RNA brings the amino acid that matches the three base codon of the mRNA to the ribosome, as these codons proceed through the ribosome the matching amino acids attach one to the other in a long chain that exists the ribosome as a polypeptide; the primary structure of a protein.
How much of the DNA is transcribed into each mRNA Molecule?
In eukaryotic cells, typically only a small portion of the DNA is transcribed into mRNA for each protein-coding gene, usually encompassing the gene's exons and some flanking intronic sequences. Each mRNA molecule represents a specific gene, consisting of about 1-2% of the total DNA in the genome. This transcription process is tightly regulated, allowing cells to produce only the necessary mRNAs for specific functions under varying conditions. Thus, while the entire genome contains the information, only select segments are actively transcribed into mRNA at any given time.
The process of making protein from mRNA is called?
Proteins are not made of mRNA (it "only" carries the instructions from the nucleus) but from the amino acids that are brought by the tRNA (Transport) to the rRNA (Ribosomes). The process is called translation.
In eukaryotes only exons are translated?
Correct. The mRNA transcibed from the DNA in the nucleus has both exons and introns; the introns are taken out and the exons are left in. The mended exons exit the nucleus and the introns stay in the nucleus. Only the exons are translated at the ribosomes. (In Eukaryotic cells only)
Are intron transcribed into the primary transcript?
No. The introns must be cut out of RNA before transcription. This is because a ribosome cannot read introns, and can only read axons. They are cut out and the axons are attached together to go through ribosome.
Why is protein different in prokaryotes and eukaryotes?
In prokaryotes, DNA is stored in the cytoplasm. also prokaryotes have no nucleus In prokaryotes, transcription and translation happen at the same time.
