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They all begin with AUG, which is the start codon.
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What is the protein strand created from the mrna strand cagaaguuccucucgc?
The sequence of amino acids (forming a protein) that result from the mRNA strand CAG-AAG-UUC-CUC-UCG-C would be: Glutamine-Threonine-Phenylalanine-Leucine-Serine Each codon must be three bases long - therefore the end of this mRNA sequence 'C' cannot code for an amino acid. There would also need to be a stop codon at the end to complete translation.
Why do all polypeptide chains start with methionine?
Because the nucleotide that codes for methionine also is the "start" signal, so whenever a polypeptide starts it uses the exact same code (AUG) so methionine must start every polypeptide chain.
Why do cells have to produce RNA from DNA?
Protine Synthesis is explained below. The answer is in understanding the process itself.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.
MRNA must pass through which membrane?
The nuclear membrane.In eukaryotic cells, DNA is transcribed into mRNA within the nucleus. Once transcription is complete the mRNA must exit the nucleus to be translated into protein, which ocurrs in the cytoplasm. Thus, mRNA must pass through the nuclear membrane.
Where must An MRNA Attach Before Protein Can Begin?
The ribosome.
If an mRNA is made up of 60 bases how many codons does it contain and how many amino acid does it code for?
A codon is exactly three bases long, so an mRNA strand with 60 bases would contain 20 codons. The first codon will encode for methionine (this is called the "start" codon) and the last codon will be a "stop" codon, which does not encode for an amino acid. Thus, an mRNA strand of 60 bases will code for 19 amino acids. Keep in mind, it is possible for a stop codon to be anywhere on the mRNA strand, and when a stop codon reaches the ribosome, translation must stop. For example, if an mRNA strand contained 30 codons, and the 15th were a stop codon, the mRNA would only code for 14 amino acids and then be done. The other 15 codons would go untranslated.
Briefly describe how the process of translation is started?
In the cytoplasm, rRNA binds to the "start" codon of a mRNA molecule. Next, a tRNA molecule with the complimentary anticodon binds to the mRNA start codon and releases an amino acid. As the mRNA moves through the rRNA, new tRNA's come along and bind to the mRNA, adding a new amino acid each time. Eventually a "stop" codon is reached, and the rRNA, mRNA, and tRNA break apart, releasing a long chain of amino acids which will fold into a protein.
What is the protein strand created from the mrna strand cagaaguuccucucgc?
The sequence of amino acids (forming a protein) that result from the mRNA strand CAG-AAG-UUC-CUC-UCG-C would be: Glutamine-Threonine-Phenylalanine-Leucine-Serine Each codon must be three bases long - therefore the end of this mRNA sequence 'C' cannot code for an amino acid. There would also need to be a stop codon at the end to complete translation.
Why do all polypeptide chains start with methionine?
Because the nucleotide that codes for methionine also is the "start" signal, so whenever a polypeptide starts it uses the exact same code (AUG) so methionine must start every polypeptide chain.
What is the amino sequence of the protein that was formed?
In order to answer this question, you must, and prpbably do have the codon sequences of the RNA or DNA, and a chart saying what each codon codes for in terms of amino acids. The mRNA from transcription is what the sheet probably has on it, with each codon contained therin signaling a certain amino acid. If you can post the sequence or something like that, then ill sertainly answer it for you.
Why do cells have to produce RNA from DNA?
Protine Synthesis is explained below. The answer is in understanding the process itself.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.
Where does the lining up of a codon and an anticodon take place?
A codon is a three-base sequence (three nitrogen bases in a row) on mRNA. It calls for a specific amino acid to be brought to the growing polypeptide.An anticodon is a three-base sequence on tRNA. It matches the codon. That's how the right amino acid is put onto the polypeptide next. The tRNA must fit its anticodon onto the mRNA codon like a jigsaw puzzle piece. Each tRNA can only bring one kind of amino acid.
MRNA must pass through which membrane?
The nuclear membrane.In eukaryotic cells, DNA is transcribed into mRNA within the nucleus. Once transcription is complete the mRNA must exit the nucleus to be translated into protein, which ocurrs in the cytoplasm. Thus, mRNA must pass through the nuclear membrane.
Protein synthesis steps?
The major steps of protein synthesis are:1. Transcription-before a protein can be synthesized, the DNA information or code must first be copied or transcribed to a type of RNA called mRNA (messenger RNA). Bothe the codes in DNA and mRNA are carried as units called codons.2. Translation-in the ribosome, the code carried by the mRNA is translated into a sequence of amino acids that will form the protein molecule dictated by the DNA.
In order for protein synthesis to occur mRNA must migrate to the?
In order for translation to occur mRNA must migrate to the ribosomes. When they migrate to the ribosomes the initiation complex is formed.
Where must An MRNA Attach Before Protein Can Begin?
The ribosome.
Would an anticodon tRNA contain a thymine nucleotide?
It can. If the codon has an "A," then its anticodon must have a "T."
