Question

If a mRNA has 96 codons, including the start and stop codon, what is the number...

If a mRNA has 96 codons, including the start and stop codon, what is the number of amino acids in the polypeptide produced? A) unable to determine because it depends on the gene B) 270 C) 30 D) 90 E) 288 F) 96

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

A codon refers to a sequence of three bases that codes for a specific amino acid. The start codon codes for methionine amino acid, whereas the stop codon, does not codes for any amino acid. Stop codon acts to terminate the translation process.

If there are 96 codons, including start and stop codons, then the number of amino acids would be one less than 96, i.e. 95 amino acids long. Thus correct answer should be 95 amino acids long. Thus, most appropriate choice is: F. 96.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1) A polypeptide produced in a cell is 1,533 amino acids in length. The number of...
1) A polypeptide produced in a cell is 1,533 amino acids in length. The number of codons found on the mRNA used to produce the polypeptide is Select one: a. 4,599 b. 511 c. 4,602 d. 1,533 e. 1,534 2) A gene generates an mRNA that codes for a polypeptide 20 amino acids in length. The number of nucleotides in the coding region of the mRNA is Select one: a. 60 b. 63 c. 57 d. 19 e. 20
Q2 An open reading frame (ORF) is a section of codons that begins with a start...
Q2 An open reading frame (ORF) is a section of codons that begins with a start codon and ends with a stop codon. Each codon specifies for a specific amino acid. ORF is the part of a gene that after transcription into an mRNA gets translated into a protein. With the help of several translation factors and enzymes, ribosomes translate mRNAs into proteins. The following DNA sequence contains a complete open reading frame (ORF) of a short transcriptional unit. The...
Introns are known to contain stop codons (UAA, UGA, or UAG), yet these codons do not...
Introns are known to contain stop codons (UAA, UGA, or UAG), yet these codons do not interrupt the coding of a particular protein. Why? a. More than one stop codon is needed to stop transcription. b. Exons are spliced out of mRNA before translation. c. These triplets do not cause termination in gene expression. d. Stop codons are only required for termination of mRNA synthesis. e. Introns are removed from mRNA before translation A(n) _____ is located upstream of a...
1) When a ribosome encounters a stop codon, what happens to terminate transcription? a)tRNAs that do...
1) When a ribosome encounters a stop codon, what happens to terminate transcription? a)tRNAs that do not have an amino acid enter the A site to release the polypeptide b)the small ribosomal subunit immediately dissociates from the large subunit of the ribosome to terminate translation c)special proteins recognize the stop codon and release the polypeptide from the ribosome d)the ribosome scans for a polyadenylation site and adds a stop tRNA to the peptide e) the 5’ methyl-guanine cap loops to...
You identify a gene from E. coli that is very small. Using recombinant DNA technology, you...
You identify a gene from E. coli that is very small. Using recombinant DNA technology, you managed to clone the whole piece of DNA that contains all codons (including stop and start codons) for protein synthesis. Using automated sequencing, you obtain the following sequence: 5’-TTAATATCAAGCTGATTCAGGCCCAAACATCCT-3’ A. Using the above sequence for reference, write out the mRNA transcript (be sure to label the 5' and 3' ends). B. Translate the protein that is coded for by the mRNA strand. C. How...
You are studying a mouse gene named MtoA. You know that the protein product of this...
You are studying a mouse gene named MtoA. You know that the protein product of this gene localizes to mitochondria in mice. Your goal is that you want to know whether mouse MtoA protein is capable of localizing to mitochondria if produced in yeast cells. You decide to clone a gene into a translational fusion vector that will add jellyfish DNA sequence encoding the GFP proteins (238 amino acids) in place of the normal stop codon. Unfortunately, you can't find...
12. If the DNA repair mechanisms fail to correct a defect in nucleotide sequencing, a permanent...
12. If the DNA repair mechanisms fail to correct a defect in nucleotide sequencing, a permanent change known as a __________________ may result. 13. As the enzyme helicase opens and “unzips” the two strands of DNA by breaking the hydrogen bonds, a Y-shaped ________________________ forms. a. Lagging strand b. Leading strand c. Okazaki fragment d. Replication fork 14. One large difference between transcription and translation between prokaryotes and eukaryotes is that, in prokaryotes: a. Translation occurs simultaneously with transcription b....
A company has just switched to a 4-day work week. The CEO measured the number of...
A company has just switched to a 4-day work week. The CEO measured the number of units produced by 8 employees one week before and one week after the change. The CEO would like to know if there is a difference in the number of units produced. ID Before After A 25 23 B 26 24 C 27 26 D 22 23 E 29 30 F 26 24 G 29 26 H 30 32 *Note: ID is used to keep...
When is a hypothesis considered scientific? a. when it is based on something other than observation...
When is a hypothesis considered scientific? a. when it is based on something other than observation b. when it can be tested and is refutable c. when it relies on anecdotal evidence d. when it relies on mystical explanations e. All hypotheses are considered scientific until experiments determine otherwise. 3. Of the following, which is the earliest step in the scientific process? a. generating a hypothesis b. analyzing data c. conducting an experiment d. drawing a conclusion e. developing a...
1.   Which is not true about autoclaving? a. Autoclaving requires steam under pressure b. Autoclaving requires...
1.   Which is not true about autoclaving? a. Autoclaving requires steam under pressure b. Autoclaving requires maintaining steam at 121oC and 15 psi for 15 minutes c. It is an effective way to pasteurize milk and other liquids d. Steam must come in contact with the surface of the substance being sterilized 2.     We wished to determine the abundance of bacteria in a sample of milk. To do this ten-fold serial dilutions of a one milliliter milk sample were...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT