Concept explainers
(a)
Interpretation: We need to comprehend the corresponding section of mRNA which is produced from the given DNA template.
Concept Introduction: The molecule in living cells which carry codes from DNA in the nucleus to the ribosomes, which are the sites of protein synthesis in the cytoplasm are said to be messenger RNA or mRNA.
(b)
Interpretation: The three-letter and one-letter abbreviations for the corresponding peptide segment should be determined.
Concept Introduction: A codon represents the sequence of three DNA or RNA
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EP BASIC CHEMISTRY-STANDALONE ACCESS
- The codon UAA stops protein synthesis. Why does the sequence UAA in the following stretch of mRNA not cause any problems?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_forwardWhat is a replication fork?arrow_forward
- The -chain of hemoglobin is a protein that contains 146 amino acids residues. What minimum number of nucleotides must be present in a strand of mRNA that is coded for this protein?arrow_forwardFor the trinucleotide 5 UCG 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_forwardComplete degradation of a protein into individual amino acids involves choose all that are correct: a. Removal of a water molecule from between two amino acids b. Addition of a water molecule between two amino acids c. A hydrolysis reaction d. The breaking of peptide linkagearrow_forward
- What amino acid sequence is coded for by the following DNA coding strand (sense strand)? (5') CTT-CGA-CCA-GAC-AGC-TTT (3')arrow_forwardC) СНО HO-C-OH CH,OH D) ÇOOH H-C-OH CH;OH 39. DNA isolated from human cheek cells was found to contain 20% guanine. What percent of the nucleotides in this DNA would be cytosine? A) 20% В) 30% C) 40% D) 80% 40. Which statement below is true regarding peptide hydrolysis? A) Water is formed. B) The side chains (R groups) are broken from the carbon. C) It requires extra amino acids to serve as catalysts. D) Carboxylic acid and amine groups are formed. 41. The biochemical that is considered insoluble fiber is classified as a A) carbohydrate. B) lipid. C) nucleic acid. D) protein. 42. Which biomolecular component is important for a virus interacting with a host cell? A) DNA B) RNA C) Protein D) Waxarrow_forwardWhen amino acids are brought to the ribosome by the tRNA so a peptide bond can be formed, what is the name of the organic functional group generated between the amino acid and tRNA? a. Acetal b. Amide c. Ester d. Ketone e. Thioesterarrow_forward
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