Diyvehiclerepair
Why is RNA necessary to act as a messenger? (Why can't the code be taken directly from DNA?) RNA acts like a messenger because it transfers the codes for the DNA because DNA is too big to fit through the nuclear pores.
- Why is DNA not directly used in translation?
- Why can't DNA be used directly to make proteins?
- Why can't the DNA code for the amino acids directly?
- Why is DNA not directly translated into a polypeptide chain?
- Is DNA directly involved in translation?
- In which of the following synthesis of DNA strand is not involved directly?
- Can protein be made directly from DNA?
- Does DNA make proteins directly?
- Which type of DNA does not direct the production of proteins?
- Does DNA only code for proteins?
- How are amino acids related to DNA?
- Why is it advantageous to use RNA as opposed to translating proteins directly from DNA?
- Why is mRNA produced instead of DNA being the direct code for translation?
- Why it is necessary for there to be an intermediate mRNA between DNA and protein?
- Which process is DNA directly involved in?
- What if a mutation caused a change in the code?
- Which of the following are directly involved in translation?
Why is DNA not directly used in translation?
During translation DNA is not directly involved in its process. DNA first gets transcribed to RNA to form the mRNA which then gets translated to form the amino acid chain. DNA is only used in the process of replication and transcription. In translation it has no direct role.
Why can't DNA be used directly to make proteins?
DNA cannot be converted into protein directly because there are enzymes available to translate DNA directly into protein.
Why can't the DNA code for the amino acids directly?
Why was this a tricky problem? In one of the simplest potential codes, each nucleotide in an DNA or RNA molecule might correspond to one amino acid in a polypeptide. However, this code cannot actually work, because there are 20 amino acids commonly found in proteins and just 4 nucleotide bases in DNA or RNA.
Why is DNA not directly translated into a polypeptide chain?
Justifies reasons why a polypeptide chain is not directly translated from the DNA strand: Ribosomes are used to make polypeptide chains and are not found in the nucleus. Ribosomes are capable of translating only single stranded mRNA.
Is DNA directly involved in translation?
In transcription, the DNA code is transcribed (copied) into mRNA. ... However, DNA is not directly involved in the translation process, instead mRNA is transcribed into a sequence of amino acids.
In which of the following synthesis of DNA strand is not involved directly?
One strand of DNA serves as a template for the synthesis of new DNA during replication and RNA in transcription. In translation, however, RNA forms a template for protein synthesis, Hence, the correct answer is protein synthesis, as DNA is not involved directly.
Can protein be made directly from DNA?
The flow of information from DNA to RNA to proteins is one of the fundamental principles of molecular biology. It is so important that it is sometimes called the “central dogma.” Through the processes of transcription and translation, information from genes is used to make proteins.
Does DNA make proteins directly?
They make proteins. ... But the genes in your DNA don't make protein directly. Instead, special proteins called enzymes read and copy (or "transcribe") the DNA code. The segment of DNA to be transcribed gets "unzipped" by an enzyme, which uses the DNA as a template to build a single-stranded molecule of RNA.
Which type of DNA does not direct the production of proteins?
Where protein is synthesized. Genes consist of Exons which are DNA segments transcribed into messenger RNA (mRNA) that code for specific amino acids and Introns which are DNA sequences not expressed during protein synthesis.
Does DNA only code for proteins?
Only about 1 percent of DNA is made up of protein-coding genes; the other 99 percent is noncoding. Noncoding DNA does not provide instructions for making proteins.
How are amino acids related to DNA?
Hidden within the genetic code lies the "triplet code," a series of three nucleotides that determine a single amino acid. It had long been known that only 20 amino acids occur in naturally derived proteins. ...
Why is it advantageous to use RNA as opposed to translating proteins directly from DNA?
Using RNA as a template for protein synthesis instead of translating proteins directly from the DNA is advantageous for the cell because a. RNA is much more stable than DNA. ... RNA acts as an expendable copy of the genetic material, allowing the DNA to serve as a permanent, pristine repository of the genetic material.
Why is mRNA produced instead of DNA being the direct code for translation?
Every mRNA copy can make several protein copies, so the amount of protein produced from a single round of transcription can be higher than if the DNA were read directly by a ribosome. mRNA also has many binding sites for miRNA and other regulatory RNAs. If DNA were read directly, that wouldn't be possible.
Why it is necessary for there to be an intermediate mRNA between DNA and protein?
If the cell's DNA were directly read by the protein-making machinery, however, it could be damaged and the process would be slow and cumbersome. The cell avoids this problem by copying genetic information from its DNA into an intermediate called messenger RNA (mRNA).
Which process is DNA directly involved in?
The Central Dogma of Molecular Biology states that DNA makes RNA makes proteins (Figure 1). The process by which DNA is copied to RNA is called transcription, and that by which RNA is used to produce proteins is called translation.
What if a mutation caused a change in the code?
What if a mutation caused a change in the code so the message read UGG instead of UGC? The amino acid produced would be tryptophan, instead of cysteine. It would create a completely different protein. ... The tRNA will go to the cytoplasm to pick up another amino acid.
Which of the following are directly involved in translation?
Translation is catalyzed by a large enzyme called a ribosome, which contains proteins and ribosomal RNA (rRNA). Translation also involves specific RNA molecules called transfer RNA (t-RNA) which can bind to three basepair codons on a messenger RNA (mRNA) and also carry the appropriate amino acid encoded by the codon.
