Concept explainers
(a)
Interpretation:
The DNA template formed from mRNA sequence
Concept Introduction:
DNA is a molecule that is stranded with two polynucleotides into a double helix structure. The two polynucleotide strands are placed antiparallel to each other. It means that one strand starts from
In transcription, DNA strand separates and mRNA with DNA template is formed by the catalyzation of RNA polymerase. The mRNA molecule formed has base pairs opposite to DNA template.
RNA does not contain thymine base instead it has uracil base. Therefore, in this purine base adenine (A) is held with pyrimidine base uracil (U) by two hydrogen bonds. Whereas purine base guanine (G) is held with pyrimidine base cytosine (C) by three hydrogen bonds. These base pairs are denoted as
(b)
Interpretation:
The DNA template formed from mRNA sequence
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
The DNA template formed from mRNA sequence
Concept Introduction:
(d)
Interpretation:
The DNA template formed from mRNA sequence
Concept Introduction:
Refer to part (a).
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Check out a sample textbook solutionChapter 17 Solutions
Principles of General, Organic, Biological Chemistry
- Consider the following mRNA base sequence 5CUUCAG3 a. What dipeptide is coded for by this mRNA? b. What dipeptide is formed if a point mutation converts CUU to CUC? c. What dipeptide is formed if a point mutation converts CAG to AAG? d. What dipeptide is formed if a point mutation converts CUU to CUC and CAG to AAG?arrow_forwardConsider the following mRNA base sequence 5ACCCAC3 a. What dipeptide is coded for by this mRNA? b. What dipeptide is formed if a point mutation converts CAC to AAC? c. What dipeptide is formed if a point mutation converts ACC to ACU? d. What dipeptide is formed if a point mutation converts CAC to AAC and ACC to ACU?arrow_forwardAn hnRNA molecule contains three exons, with the middle one and one other being alternative exons. How many different mRNA molecules can be produced from this hnRNA molecule?arrow_forward
- What mRNA base sequence, specified in the 5-to-3 direction, would be obtained from the following portion of a gene?arrow_forward25-50 Define: (a) Intron (b) Exonarrow_forwardHow does the synthesis of a daughter DNA strand growing toward a replication fork differ from the synthesis of a daughter DNA strand growing away from a replication fork?arrow_forward
- 25-5 (a) Where in a cell is the DNA located? (b) Where in a cell is the RNA located?arrow_forwardWhich of the following best describes tRNA? a. It is the site of rRNA synthesis. b. It is the product of transcription, and encodes for translated proteins. c. It binds specific amino acids and carries them to the ribosomes during protein synthesis. d. It contains the genome and is the site at which genes are used to make mRNA.arrow_forward25-35 Which has the longest chains: tRNA, mRNA, or rRNA?arrow_forward
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