Concept explainers
(a)
Interpretation:
The informational strand of DNA that correspond to the given DNA template strand should be written.
Concept Introduction:
Conversion of genetic information in DNA into mRNA is called transcription. DNA is in double helix form and in order to proceed transcription, DNA double strand should be separated. Template strand is the strand of DNA used for transcription. Informational strand is the complementary strand of the template strand.
(b)
Interpretation:
mRNA prepared from the given template should be written.
Concept Introduction:
Conversion of genetic information in DNA into mRNA is called transcription. The DNA strand from the DNA double helix which is used for mRNA synthesis is the template strand. Transcription proceeds from 3' end to 5' end. Complementary base pairing determines which
(c)
Interpretation:
The polypeptide prepared from the mRNA transcribed should be determined.
Concept Introduction:
mRNA strand provides code for the synthesis of polypeptide chain with 20 different amino acids. A sequence of three nucleotides which is called a codon codes for a specific amino acid. There are 4 types of nucleotides found in RNA strand which are A, C, G and U. These four nucleotides can be combine in 64 different ways to make codons with three nucleotides. From these, only 61 codes for amino acids. Other three does not correspond to any of the amino acid, so, they are called stop codons.
Want to see the full answer?
Check out a sample textbook solutionChapter 22 Solutions
General, Organic, and Biological Chemistry - 4th edition
- Draw the complete structure of the ribonucleotide codon UAC. For what amino acid does this sequence code?arrow_forwardConsider 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_forward
- 3. Which amino acid is selected by the mRNA codon GAA? alanine glutamic acid histidine tyrosinearrow_forwardConsider the following DNA base sequence 3TTAATA5 a. What dipeptide is formed from the transcription and translation of this DNA segment? b. What dipeptide is formed if a DNA point mutation converts ATA to ATG? c. What dipeptide is formed if a DNA point mutation converts ATA to AGA? d. What dipeptide is formed if a DNA point mutation converts TTA to TTT?arrow_forwardWrite the DNA complement for 5-ACCGTTAAT-3. Be certain to label which is the 5 end and which is the 3 end of the complement strand.arrow_forward
- Suppose that 30% of the nucleotides in a DNA molecule are deoxyguanosine 5'- monophosphate, and that during DNA replication the percentage amounts of available nucleotide bases are 20% A, 20% C. 30% G. and 30% T. Which base would be depleted first in the replication process?arrow_forwardFor the trinucleotide 5 GCA 3 a. How many nucleotide subunits are present in its backbone? b. How many nucleotide nonbackbone subunits are present? c. How many phosphodiester linkages are present? d. What is the overall charge carried by the trinucleotide?arrow_forwardThe codon UAA stops protein synthesis. Why does the sequence UAA in the following stretch of mRNA not cause any problems?arrow_forward
- Organic And Biological ChemistryChemistryISBN:9781305081079Author:STOKER, H. Stephen (howard Stephen)Publisher:Cengage Learning,General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning