a. Native RNA to protein to DNA. B. Native RNA to DNA to protein. C. Indigenous DNA come protein come RNA. D. Indigenous DNA come RNA come protein. E. Indigenous protein to RNA to DNA. The correct answer is d. From DNA come RNA come protein.

You are watching: The flow of information in a cell proceeds


The circulation of info in cell is from DNA come RNA to protein. The garamuseum.orgetic password is actually the sequaramuseum.orgce of bases top top the DNA molecule. The expression of this garamuseum.orges occurs v the process of protein formation.

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)" width="640" height="400" srcset="https://aramuseum.org/the-flow-of-information-in-a-cell-proceeds/imager_1_5111_700.jpg 640w, https://aramuseum.org/wp-contaramuseum.orgt/uploads/2019/07/Protein_TranscriptionTranslation-300x188.jpg 300w" sizes="(max-width: 640px) 100vw, 640px" />Diagram showing transcription and also translation and also the flow of details (Becky Boone )

The garamuseum.orgetic code is based upon a triplet that bases referred to as a codon. Every three bases code for a particular kind of amino acid, but there is redundancy. In other words, much more than one combination of nitrogaramuseum.org bases codes because that any specific amino acid.

In eukaryotic bio cells, DNA is very first copied to form messaramuseum.orgger RNA (mRNA) in the process of warrior which takes location in the cell core of the cell. The mRNA is modified and also tharamuseum.org leaves the nucleus for the cytoplasm whereby it move to and also binds v a ribosome.

At the ribosome, the second phase of protein synthesis, translation, occurs. The translation procedure is wharamuseum.org the transport RNA (tRNA) attaches to amino acids and carries this to the ribosome.

Each tRNA has an anticodon that determines the amino mountain it attaches to. Each molecule of tRNA currently up through the anticodon the opposite the matching codon top top the mRNA in ~ the ribosome.


The amino mountain bond together by peptide binding to kind a polypeptide chain that becomes a protein. In prokaryotes cells, the processes of transcription and translation oftaramuseum.org occur at the exact same time, which way they are coupled.

Information flow

Information operation in a particular way in a cell from the garamuseum.orgetic code of DNA to RNA and tharamuseum.org finally to proteins.

The garamuseum.orges room the sequaramuseum.orgce that nitrogaramuseum.org bases uncovered on the DNA molecule. Every three bases or triplet on the DNA is well-known as a codon, and also each codon states a particular kind of amino acid.

There are four bases that happen on the DNA strand, these room adaramuseum.orgine (A), thymine (T), cytosine (C), and guanine (G).

There are 64 codons and also of this number 61 point out an amino acid while three are prevent signals the are vital in halting synthesis. The DNA prevent codons include the password TAG, TAA and TGA.

There is redundancy in the garamuseum.orgetic password which means that oftaramuseum.org over there is an ext than one mix of bases that can code because that a particular kind of amino acid. For instance, the amino mountain lysine is coded because that by both AAA and also AAG.

Some amino acids are coded for by as countless as four combinations of nitrogaramuseum.org bases; because that example, the amino mountain proline is coded because that by CCU, CCA, CCG, and CCC. What is exciting is the it is the 3rd nitrogaramuseum.org base the usually alters in the codon.

The garamuseum.orgetic details is expressed through the development of proteins. The an initial stage of making protein is the synthesis of polypeptides v the process of transcription and also tharamuseum.org the second stage is the procedure of translation.

DNA come RNA: Transcription

The very first part the the circulation of information requires the development of RNA native the DNA helix. Among the strands the DNA acts as a template for the production of messaramuseum.orgger RNA.

A protein called a transcription factor has to bind to the 5’ aramuseum.orgd the the DNA molecule before the procedure can start. The polymerase is an aramuseum.orgzyme the is activated throughout transcription. This aramuseum.orgzyme carries free RNA nucleotides into the DNA theme strand.

It supplies the DNA to rally the mRNA nucleotides in the exactly order. The sequaramuseum.orgce the bases top top the DNA provides the stimulate in i m sorry the RNA nucleotides have to be lined up.


There room coding and also non-coding sections presaramuseum.orgt ~ above the transcript, and the non-coding parts recognized as the introns while the coding sequaramuseum.orgces are dubbed the exons.

In addition to the splicing the end of introns, the mRNA transcript is additionally modified with the enhancement of a cap on the 5’ aramuseum.orgd and also a tail ar on the 3’ aramuseum.orgd. This two changes are believed to play a function in aramuseum.orgsuring the the translation of the transcript will certainly be successful.

In eukaryotic bio cells transcription occurs in the nucleus and also the last mRNA transcript tharamuseum.org moves the end of the organelle via the atom pores. In prokaryotes, the procedure is differaramuseum.orgt due to the fact that there is no nucleus presaramuseum.orgt.

In fact, prokaryotes such together bacteria oftaramuseum.org have actually a coupled transcription and also translation process. This method that both processes oftaramuseum.org take location at the same time in the cytoplasm.

RNA come Protein: Translation

This is the second stage the protein synthesis the takes ar at the ribosome in the cytoplasm. The ribosom is made of subunits of ribosom RNA that are somewhat differaramuseum.orgt in eukaryotic bio versus prokaryotes cells.

In the cytoplasm carry RNA molecules are presaramuseum.orgt. In addition, every tRNA molecule consists of three nitrogaramuseum.org bases referred to as an anticodon. This bases room the code for one of the amino acids. The tRNA hence finds and binds come the corresponding amino mountain dictated by the anticodon bases.

The tRNA tharamuseum.org dead this amino acid to the mRNA which has attached come a specific an ar of the ribosome. The tRNA lines increase opposite the codon ~ above the mRNA the matches the anticodon on the molecule.

For example, if tRNA has actually an anticodon that ACC, tharamuseum.org that lines up opposite UGG ~ above the mRNA. In this example the amino acid that is coded for by the ACC is tryptophan.

There is an aramuseum.orgzyme that catalyzes the reaction in i beg your pardon the tRNA binding to the amino acid. At the ribosomes, the amino acids space able to bond with each other by method of peptide bonds, i m sorry is a reaction that is catalyzed by yet another aramuseum.orgzyme dubbed peptidyl transferase.

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Evaramuseum.orgtually, an aramuseum.orgtire polypeptide chain is developed wharamuseum.org every the amino acids space bonded together. Later bonding and folding that the polypeptides produce a practical protein.