Concept explainers
(a)
Interpretation: Among the given base pairing situations, whether the base paring includes two DNA strands, a DNA strand and a RNA strand, or it might includes either two DNA strands or a DNA strand and an RNA strand has to be predicted.
Concept introduction: DNA contains double helical strands along with the complementary base pairs. The four complementary bases of DNA are adenine (A), thymine (T), guanine (G) and cytosine (C). RNA contains the complementary base pairs. The four complementary bases of RNA are adenine (A), uracil (U), guanine (G) and cytosine (C).
(b)
Interpretation: Among the given base pairing situations, whether the base paring includes two DNA strands, a DNA strand and a RNA strand, or it might includes either two DNA strands or a DNA strand and an RNA strand has to be predicted.
Concept introduction: DNA contains double helical strands along with the complementary base pairs. The four complementary bases of DNA are adenine (A), thymine (T), guanine (G) and cytosine (C). RNA contains the complementary base pairs. The four complementary bases of RNA are adenine (A), uracil (U), guanine (G) and cytosine (C).
(c)
Interpretation: Among the given base pairing situations, whether the base paring includes two DNA strands, a DNA strand and a RNA strand, or it might includes either two DNA strands or a DNA strand and an RNA strand has to be predicted.
Concept introduction: DNA contains double helical strands along with the complementary base pairs. The four complementary bases of DNA are adenine (A), thymine (T), guanine (G) and cytosine (C). RNA contains the complementary base pairs. The four complementary bases of RNA are adenine (A), uracil (U), guanine (G) and cytosine (C).
(d)
Interpretation: Among the given base pairing situations, whether the base paring includes two DNA strands, a DNA strand and a RNA strand, or it might includes either two DNA strands or a DNA strand and an RNA strand has to be predicted.
Concept introduction: DNA contains double helical strands along with the complementary base pairs. The four complementary bases of DNA are adenine (A), thymine (T), guanine (G) and cytosine (C). RNA contains the complementary base pairs. The four complementary bases of RNA are adenine (A), uracil (U), guanine (G) and cytosine (C).
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Chapter 22 Solutions
GENERAL,ORGANIC,+BIO.CHEM.-MINDTAP
- The base content of a particular DNA molecule is 36% thymine. What is the percentage of each of the following bases in the molecule? a. Adenine b. Guanine c. Cytosinearrow_forwardThe base composition for one of the strands of a DNA double helix is 23% A, 31% C, 22% G, and 24% T. What is the percent base composition for the other strand of the DNA double helix?arrow_forwardDo the DNA sequences ATGC and CGTA represent the same compound? Explain.arrow_forward
- The base sequences in mRNA that code for certain amino acids are Glu: GAA, GAG Val: GUU, GUC, GUA, GUG Met: AUG Trp: UGG Phe: UUU, UUC Asp: GAU, GAC These sequences are complementary to the sequences in DNA. a. Give the corresponding sequences in DNA for the amino acids listed above. b. Give a DNA sequence that would code for the peptide trp-glu-phe-met. c. How many different DNA sequences can code for the tetrapeptide in part b? d. What is the peptide that is produced from the DNA sequence TACCTGAAG? e. What other DNA sequences would yield the same tripeptide as in part d?arrow_forwardWhich base is found in DNA but not in RNA? a. thymine b. cytosine c. guanine d. adeninearrow_forwardHuman brain natriuretic peptide (BNP) is a small peptide of 32 amino acids used in the treatment of congestive heart failure. How many nitrogen bases are present in the DNA that codes for BNP?arrow_forward
- Explain how recombinant DNA technology has made available pharmaceuticals not available by other means.arrow_forwardWhat sequence of bases on one strand of DNA is complementary to the following sequence on another strand? (5') GGCTAATCCGT (3')arrow_forwardList the postulates of the Watson-Crick model of DNA secondary structure.arrow_forward
- Although RNA is single-stranded, the strand sometimes folds back on itself to give a complementary portion. What would be the complementary portion of the RNA fragment having the bases uracil-cytosine-guanine? A virus is a particle that contains DNA or RNA that is surrounded by a coat of protein that can replicate only in a host cell. The influencza virus shown in this electron microscope image is an RNA virus.arrow_forwardHow many total hydrogen bonds would exist between the following strands of DNA and their complementary strands? a. GCATGC b. TATGGCarrow_forwardGiven the following nucleotide sequence in DNA: 5' TCGTAGGAT 3': (a) Determine the sequence of the complementary strand of DNA. Report this sequence by writing it from its 5' end to its 3' end. (b) Write the sequence (5'-3') for the strand of mRNA that would be complementary to the original strand of DNA. (c) Assuming that this sequence is part of the coding sequence for a protein and that it is properly lined up so that the first codon of this sequence begins with the 5' nucleotide of the mRNA, write the sequences for the three anti- codons that would be complementary to this strand of mRNA. (d) What sequence of amino acids is selected by this mRNA? (The complete genetic code is listed in several sites on the Internet.)arrow_forward
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