QUESTION 17 Which of the following best supports the idea that the genetic code is composed of triplet codons? O A. Poly G RNA directs synthesis of poly glycine B. Addition or deletion of one base in a coding region causes an abnormal, defective protein to be produced. OC. Poly U RNA directs synthesis of poly proline. O D. Addition or deletion of three bases in a coding region can result in the production of a protein that s retains normal function. O E. A and C are both correct.

Q: Another name for the RNA polymerase recognition/binding site upstream of a gene is the O a. promoter…

A: Introduction :  In transcription process RNA polymerase binds to the DNA upstream of the gene at a…

Q: Post-transcriptional control of gene regulation: None of the above Can stop gene expression quickly…

A: Proteins are a type of macromolecules that are critical for different varieties of roles in cellular…

Q: Amino acids are covalently attached at site 3'A and A-OH MRNA binds to site ES А. В, С

A: Amino acids are the building blocks of proteins. Amino acids are linked by peptide bonds to form a…

Q: Both conservative and replicative transposition result in movement of the transposon; however, only…

A: Question - Both conservative and replicative transposition result in movement of the transposon;…

Q: Question 4 Which is/are NOT true of protein isofor (A They have variable amino acid B They have…

A: Proteins are composed of amino acids, which are bound together by peptide linkage. Amino acids…

Q: Question 2 Which example is describing a "missense" mutation? OThe normal amino acid sequence of a…

A: A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is…

Q: Which of the following is NOT a correct pairing of the RNA type and its job O A. TRNA - in…

A: Introduction:- RNA (ribonucleic acid), complex compound of high molecular weight that functions in…

Q: Which of the following is required for RNA splicing to occur?

A: RNA splicing is the process in which newly made precursor m-RNA is transferred into a mature mRNA.

Q: QUESTION 4 Which type of mutation will affect not only the amino acid encoded by the affected codon,…

A: Frameshift mutation can change every amino acid after the point of mutation . It caused by deletion…

Q: recognition of the AUG initiation codon in an mRNA is TRUE?

A: In eukaryotes and Archaea, the start codon always codes for methionine, while in bacteria,…

Q: Eukaryotic mRNAs encode protein(s) and most prokaryotic MRNAS encode protein(s). а. multiple,…

A: mRNA is the transcribed molecule using DNA as a template. In prokaryotes, mRNA is transcribed in the…

Q: Question 9 Expression of genes independently of regulation is termed: A repressible regulation. B…

A: Genes are the functional segments of DNA. They encode for proteins which are the ultimate players of…

Q: 5' Capping and 3' polyadenylation of eukaryotic mRNA : a. Destabilize MRNA b. are required for…

A: Introduction:: The correct choice is option (b).

Q: When MRNAS are edited to become mature mRNA, the nonsense regions that are removed are called and…

A: Ribonucleic acid (RNA) is a significant organic macromolecule that is available in all natural…

Q: Question 30 Which of the following does not require GTP hydrolysis? A all of the above require GTP…

A: Answer--- correct option is (A) All of the above require GTP hydrolysis

Q: Queștion 2: The protein Collagen alpha-1 has 1671 amino acids. How many codons must have been read…

A: Proteins are made up of long sequences of amino acid-building components. The sequence of the amino…

Q: Choose best match of the events that occur during translation with their locations in the E. coli…

A: Translation is the process by which the genetic code on messenger RNA (mRNA) molecules is decoded to…

Q: QUESTION 4 When mRNAs are edited to remove nonsense regions, this is called and it happens in the O…

A: The central dogma defines the flow of genetic information from DNA to the proteins. DNA strands are…

Q: Question 5. What is the effect on a target mRNA when it is silenced by a miRNA that has a complete…

A: Protein synthesis is one complex procedure taken up by the cell and that needs various components to…

Q: Question 40 Which of the following is not a key step in the activation of MRNA synthesis in…

A: Ans- In eukaryotes, mRNA is synthesized in the nucleus during transcription in which the single DNA…

Q: QUESTION 4 Suppose you have a length of DNA sequence that corresponds to a complete mRNA open…

A: Q4. The correct option is D i.e, look for splice sites GT-AG thise should only be present if the DNA…

Q: What would be the effect on the gene product of a particular gene that had two separate mutations in…

A: Gene mutations are of various types such as  Deletion  Insertion  Missense  Non sense  Silent…

Q: You are doing a genetic engineering experiment. You use restrictions enzymes to cut the regulatory…

A: Jacob and Monod (1961) first described the lac operon, which codes for the cellular machinery that…

Q: QUESTION 1 Write the order of nucleotides in mRNA that would be transcribed from the following…

A: Transcription is the process by which mRNA is synthesized from a DNA template. During transcription,…

Q: Question 8 Which codon is the start codon in the MRNA below? MRNA 5 - AAUAUGCGGAUGCCCGAA O AAU O UUA…

A: There are 4 nitrogen bases present in DNA; these are Adenine (A), Thymine (T), Cytosine(C), and…

Q: Which of the following step is NOT involved in eukaryotic MRNA synthesis? O Elongation O…

A: DNA is the nucleic acids present in the organisms. DNA is the deoxy-ribose nucleic acid in which…

Q: Question 31 In E. coli, which of the following factors function to ensure the proper binding of…

A: Initiation factors are proteins that bind to the small subunit of the ribosome during the initiation…

Q: Question 16 What happens when a stop codon is reached by a ribosome? A termination tRNAter binds to…

A: Translation: The process through which RNA codes for specific proteins is known as translation. It…

Q: inans 5' 3' MRNA For our Unit 12 discussion on gene expression, please answer the following: 1.…

A: The genetic material in the cell contains various genes that codes for mRNA ( messenger RNA) by…

Q: What is the purpose of the inverted repeats at the ends of DNA-based transposons? A. The inverted…

A: Transposons, also known as jumping Genes, are DNA sequence that move from one location of a genome…

Q: QUESTION 11 Which of the following statements about RNA interference pathways and mechanisms is…

A: Small interfering RNA are small, double stranded RNA molecules that may bind with the target…

Q: y the meaning of this statement: Genetic information is encoded in the DNA molecule.

A: Yes, Genetic information is encoded in the DNA molecule .It is also present in RNA molecule in some…

Q: Question 10. A mRNA contains a codon with the sequence 5'-GAA-3'. Answer A and B for credit. A. What…

A: DNA acts as genetic material in almost all living organisms. It is a self replicating molecule. mRNA…

Q: The following are STOP codons except A UGA (в) UAG UAA AUG Question 14 Which is not a fat-soluble…

A: A stop codon is a codon (nucleotide triplet inside messenger RNA) that marks the end of the current…

Q: During initiation of protein synthesis,  A. methionyl-tRNA appears at the A site of the 80S…

A: Since we are instructed to answer only one question, you can post other questions in separate post.…

Q: AP1 is a transcription factor and an important regulator of gene expression and cell proliferation.…

A: 1). The western test is used to detect and separate the desired protein. The western blot test is a…

Q: The extent to which a given gene is transcribed depends upon (A the single transcription factor…

A: Transcription is a process where DNA converted into a mRNA. It has three step initiation, elongation…

Q: Question 7: At third codon positions, approximately what proportion of muations are synonymous? A.…

A: Any change in the DNA sequence results in mutation. Synonymous mutation does not change the amino…

Q: QUESTION 3 In the genetic code, the codon or 3 base sequence has how many possible combinations? O…

A: In the genetic code, the codon or 3 base sequence has the following possible combinations - d. 64

Q: Which of the following is required for RNA splicing to occur? A a free 5 hydroxyl created by…

A: In vertebrates, there are three signals for direct splicing: - 5/ splice site hydroxylation…

Q: Question 4

A: 4. The wild type     Lys-ser-Pro-Ser-Leu-Asn-Ala-Ala-Lys The double mutant…

Q: Which of the following statements about how cells control the size of the poly-A tail on mRNA…

A: The mRNA or the messenger RNA is the pre-RNA which is derived from the DNA during transcription. The…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.