BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 18, Problem 4U
An open reading frame (ORF) is distinguished by the presence of
a. a stop codon.
b. a start codon.
c. a sequence of DNA long enough to encode a protein.
d. All of the choices are correct.
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a. Give the sequence of mRNA that would be transcribed off of the bottom strand and label its 5' and 3' ends.
b. translate this RNA sequence in 1a into a protein sequence
c. Give the sequence of mRNA that would be transcribed off of the top strand and label its 5' and 3' ends.
d. Translate this RNA sequence in 1c into a protein sequence
What is the genetic code?
a. The relationship between a three-base codon sequence and an amino acid or the end of translation
b. The entire base sequence of an mRNA molecule
c. The entire sequence from the promoter to the terminator of a gene
d. The binding of tRNA to mRNA
Which of the following best describes tRNA?
a. Provides the instructions for the amino acid sequence of a polypeptide
b. Complexes with ribosomal proteins to form ribosomes
c. Used for eukaryotic RNA processing
d. Transports amino acids to ribosomes during translation
Chapter 18 Solutions
BIOLOGY
Ch. 18.1 - Prob. 1LOCh. 18.1 - Describe the pros and cons of restriction mapping,...Ch. 18.1 - Prob. 3LOCh. 18.2 - Discriminate between dideoxy terminator sequencing...Ch. 18.2 - Prob. 2LOCh. 18.3 - Describe the findings of the Human Genome Project.Ch. 18.3 - Prob. 2LOCh. 18.3 - Prob. 3LOCh. 18.4 - Prob. 1LOCh. 18.4 - Prob. 2LO
Ch. 18.4 - Prob. 3LOCh. 18.5 - Prob. 1LOCh. 18.5 - Prob. 2LOCh. 18.5 - Prob. 3LOCh. 18.6 - Prob. 1LOCh. 18 - Prob. 1DACh. 18 - If the human genome contains approximately 3...Ch. 18 - Prob. 1IQCh. 18 - Prob. 2IQCh. 18 - Prob. 3IQCh. 18 - Prob. 4IQCh. 18 - Prob. 5IQCh. 18 - Prob. 6IQCh. 18 - A genetic map provides a. the sequence of the DNA...Ch. 18 - Prob. 2UCh. 18 - Approximately how many genes are there in the...Ch. 18 - An open reading frame (ORF) is distinguished by...Ch. 18 - What is a BLAST search? a. A mechanism for...Ch. 18 - Prob. 6UCh. 18 - Prob. 7UCh. 18 - Prob. 8UCh. 18 - Prob. 1ACh. 18 - Prob. 2ACh. 18 - Prob. 3ACh. 18 - Prob. 4ACh. 18 - What information can be obtained from a DNA...Ch. 18 - Prob. 6ACh. 18 - Prob. 7ACh. 18 - You are in the early stages of a genome-sequencing...Ch. 18 - Genomic research can be used to determine if an...
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- _______ are removed from new mRNAs. a. Introns c. Poly-A tails b. Exons d. Amino acidsarrow_forwardHow do we call the type of point mutation in which an A->U change occurs in the codon for the sixth amino acid in hemoglobin chain b? a) Inversion b) Transversion c) Transition d) Transaminationarrow_forwardLook carefully at the illustrations for gene translation. What mRNA codon specifies the tRNA anticodon that inserts the amino acid tyrosine (Tyr)?arrow_forward
- _______is/are removed from a new mRNA. a. Introns c. A poly-A tail b. Exons d. Amino acidsarrow_forwarda. The reading frame DNA sequence is b. The mRNA sequence is c. The polypeptide sequence is a.The mutated polypeptide sequence is b.What kind of mutation was produced?arrow_forwardWhich of the following mutations would be most likely to havea harmful effect on an organism?(A) a deletion of three nucleotides near the middle of a gene(B) a single nucleotide deletion in the middle of an intron(C) a single nucleotide deletion near the end of the codingsequence(D) a single nucleotide insertion downstream of, and close to,the start of the coding sequencearrow_forward
- Which of the following best describes mRNA?Group of answer choices a) Complexes with ribosomal proteins to form ribosomes b) Transports amino acids to ribosomes during translation c) Provides the instructions for the amino acid sequence of a polypeptide d) Used for eukaryotic RNA processingarrow_forwardTranslation of the dna sequence AAGCTGGGA would result in: A) a DNA strand with the base sequence TTCGACCCT B) an mRNA strand with the sequence TTCGACCCT C) a sequence of three amino acids linked by peptide bonds D) an mRNA strand with the sequence UUGCACCCUarrow_forwardFinally, imagine that a mutation occurred in the codon below and an A was inserted between the two Ts. How would this affect the mRNA and the amino acid for that codon? Old DNA codon Old RNA codon Old amino acid New DNA codon New mRNA codon New amino acid T T G T A T G This would be an example of which type of a mutation?__________________________arrow_forward
- The function of the genetic code is toa. promote transcription.b. specify the amino acids within a polypeptide.c. alter the sequence of DNA.d. do none of the above.arrow_forwardFigure out the mRNA and amino acid sequences each mutant gene would code for and compare them to the original proteinarrow_forwardEukaryotic mRNA is capped at the 5' end by: a. adding a poly A sequence to the 5' end. b. ligating a 7-methylguanylate via a 3’ linkage. c. methylating the base pairs near the 5’ end. d. forming a lariat structure via transesterification.arrow_forward
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