Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 15, Problem 5RQ
How many
- 12
- 24
- 36
- 43
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Students have asked these similar questions
How many nucleotides are in 12 mRNA codons? a. 12 b. 24 c. 36 d. 48
How many initiation codons are there?
a.
1
b.
3
c.
4
d.
20
A certain mRNA strand has the following nucleotide sequence:
5'—AUG—ACG—UAU—AAC—UUU—3'
What is the anticodon for each codon? What is the amino acid sequence of the polypeptide?
Chapter 15 Solutions
Biology 2e
Ch. 15 - Figure 15.11 A scientist splices a eukaryotic...Ch. 15 - Figure 15.13 Errors in splicing are implicated in...Ch. 15 - Figure 15.16 Many antibiotics inhibit bacterial...Ch. 15 - The AUC and AUA codons in mRNA both specify...Ch. 15 - How many nucleotides are in 12 mRNA codons? 12 24...Ch. 15 - Which event contradicts the central dogma of...Ch. 15 - Which subunit of the E. coli polymerase confers...Ch. 15 - The -10 and -35 regions of prokaryotic promoters...Ch. 15 - Three different bacteria species have the...Ch. 15 - Which feature of promoters can be found in both...
Ch. 15 - What transcripts will be most affected by low...Ch. 15 - How do enhancers and promoters differ? Enhancers...Ch. 15 - Which pre-mRNA processing step is important for...Ch. 15 - What processing step enhances the stability of...Ch. 15 - A scientist identifies a pre-mRNA with the...Ch. 15 - The RNA components of ribosomes are synthesized in...Ch. 15 - In any given species, there are at least how many...Ch. 15 - A scientist introduces a mutation that makes the...Ch. 15 - Imagine if there were 200 commonly occurring amino...Ch. 15 - Discuss how degeneracy of the genetic code makes...Ch. 15 - A scientist sequencing itiRNA identifies the...Ch. 15 - If mRNA is complementary to the DNA template...Ch. 15 - In your own words, describe the difference between...Ch. 15 - A fragment of bacterial DNA reads: 3’...Ch. 15 - A scientist observes that a cell has an RNA...Ch. 15 - Chronic lymphocytic leukemia patients often harbor...Ch. 15 - Transcribe and translate the following DNA...Ch. 15 - Explain how single nucleotide changes can have...Ch. 15 - A normal mRNA that reads 5’ -...
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- The genetic code is defined as a series of _______________ in _______________. (a) anticodons; tRNA (b) codons; DNA (c) anticodons; mRNA (d) codons; mRNA (e) codons and anticodons; rRNAarrow_forwardA certain mRNA strand has the following nucleotide sequence: 5AUGACGUAUAACUUU3 What is the anticodon for each codon? What is the amino acid sequence of the polypeptide? (Use Figure 13-5 to help answer this question.) Figure 13-5 The genetic code The genetic code specifies all possible combinations of the three bases that compose codons in mRNA. Of the 64 possible codons, 61 specify amino acids (see Figure 3-17 for an explanation of abbreviations). The codon AUG specifies the amino acid methionine and also signals the ribosome to initiate translation (start). Three codonsUAA, UGA, and UAGdo not specify amino acids; they terminate polypeptide synthesis (stop).arrow_forwardThe following segment of DNA codes for a protein. The uppercase letters represent exons. The lowercase letters represent introns. The lower strand is the template strand. Draw the primary transcript and the mRNA resulting from this DNA.arrow_forward
- Which of the following is/are not found in a bacterial mRNA molecule? (a) stop codon (b) upstream leader sequences (c) downstream trailing sequences (d) start codon (e) promoter sequencesarrow_forwardFigure 14.21 A fr am eshift mutation that results in the insertion of three nucleotides is often less deleterious than a mutation that results in the insertion of one nucleotide. Why?arrow_forwardIf the genetic code uses triplets, how many different amino acids can be coded by a repeating RNA polymer composed of UA and UC (UAUCUAUCUAUC ...)? a. one b. two c. three d. four e. fivearrow_forward
- Codons are found on __________ and they contain __________ bases. a. tRNA, 4 b. mRNA, 3 c. tRNA, 3 d. mRNA, 4arrow_forwardThe three-nucleotide codon system can be arranged into ____________ combinations.a. 16b. 20c. 64d. 128arrow_forwardEach combinations of nitrogen bases on the mRNA molecule is a codon, which is a three letter code for a specific amino acid. The table shows the mRNA codon for each amino acid. Use the genetic code table to answer the questions. 4. The codon for tryptophan is? 5. For leucine, there are __ different options. 6.The codon GAU is for ____7. In a stop codon, if the second base is G, the first and third bases are __ and __arrow_forward
- Which base pair in the codon-anticodon is a "wild card" resulting in 32 tRNAs rather than 61? depends on the protein being produced always the first base pair always the third base pair always the second base pairarrow_forwardA particular triplet of bases in the template strand of DNA is 5' AGT 3'. The corresponding codon for the mRNA transcribed is _____. 5' TCA 3' 3' ACU 5' 3' UCA 5' 3' UGA 5'arrow_forwardWhich of the following choices best match the blank? Three-nucleotide segments of RNA called _________ encode for specific amino acids. Their order in mRNA determines the order of amino acids, which are connected together to make the protein. The amino acid translation chart shows the 64 possible three-nucleotide combinations and the amino acids they code for in most organisms. A. codonsB. chromosomesC. genesarrow_forward
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