Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 9, Problem 9RQ
How long would the peptide be that is translated from this MILNA sequence: 5-AUGGGCUACCGA-3?
a. 0
b. 2
c. 3
d. 4
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Given is the 30 nucleotides in the human gene for hemoglobin (the oxygen-carrying protein in the red blood cells): 5’ TAC-CAC-GTG-GAC-TGA-GGA-CTC-CTC-TTC-AGA 3’a. What is the complementary strand?b. Deduce the mRNA in this coding region.c. What is the amino acid sequence based on this mRNA?d. A very important mutation in human hemoglobin occurs in this DNA sequence, where the T at nucleotide 20 is replace with an A. The mutant hemoglobin is called sickle cell hemoglobin and is associated with severe anemia. What is the amino acid replacement that results in sickle-cell hemoglobin?
How long would the peptide be that is translated from this MRNA sequence: 5'-AUGGGCUACCGA-3'?a. 0b. 2c. 3d. 4
A number of fragments that will be
formed by cleaving the peptide
Met-Ala-Lys-Met-Arg-Phe-Met-Asn
by using CNBr is
O a. three
O b. four
O c. five
O d. two
Chapter 9 Solutions
Concepts of Biology
Ch. 9 - Figure 9.10 You isolate a cell strain in which the...Ch. 9 - Which of the following does cytosine pair with? a....Ch. 9 - Prokaryotes contain a ______ chromosome, and...Ch. 9 - DNA replicates by which of the following models?...Ch. 9 - The initial mechanism for repairing nucleotide...Ch. 9 - A promoter is ______. a. a specific sequence of...Ch. 9 - Portions of eukaryotic mRNA sequence that are...Ch. 9 - The RNA components of ribosomes are synthesized in...Ch. 9 - How long would the peptide be that is translated...Ch. 9 - Control of gene expression in eukaryotic cells...
Ch. 9 - Post-translational control refers to: a....Ch. 9 - Describe the organization of the eukaryotic...Ch. 9 - Describe the structure and complementary base...Ch. 9 - How do the linear chromosomes in eukaryotes ensure...Ch. 9 - Transcribe and translate the following DNA...Ch. 9 - Describe how controlling gene expression will...
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- A retrotransposon does NOT contain genes for which polyprotein? a. gag b. pol c. It contains genes for all of these polyproteins d. envarrow_forwardWhat is the predicted size of the corresponding mature mRNA in base pairs (bp), excluding the 5’ cap and 3’ poly- A tail? a. 220bp b. 295bp c. 140bp d. 435bparrow_forwardWhich part of a tRNA molecule acts as an amino acid attachment site? a. the 5' end b. the 3' end c. the anticodon d. any of thesearrow_forward
- If a tRNA has an anticodon with the sequence 5′-CAG-3′, which amino acid does it carry? a. Aspartic acid c. Leucine b. Valine d. Glutaminearrow_forwardWhich translation factor mediates the aminoacyl-tRNA entry into the A site of the ribosome? A. EF-Tu B. EF-Ts C. EF-G D. IF1arrow_forwardDetermine the identity of the N-terminal amino acid after reconstructing the intact protein. Why is this answer correct and why are the others incorrect? A. Asp B. Ser C. Glu D. Ilearrow_forward
- The codon UUU in an mRNA molecule which results in phenylalanine being inserted as the protein is made. Which will be a characteristic of this codon? a. The tRNA molecule that binds to the UUU codon must have an AAA anticodon. Nde ba e2? b. UUU could code for both phenylalanine and alanine during translation. c. The aminoacyl-tRNA synthetase for phenylalanine binds only the UUU codon. d. UUU is probably only one of several codons that code for phenylalanine.arrow_forwardIn any given species, there are at least how many types of aminoacyl tRNA synthetases? a. 20 b. 40 c. 100 d. 200arrow_forwardWrite a possible mRNA sequence that codes for each peptide. a. Ile–Met–Lys–Ser–Tyr b. Pro–Gln–Glu–Asp–Phe c. Thr–Ser–Asn–Argarrow_forward
- Procedure This activity will use the Human β-hemoglobin gene, which is mutated in sickle cell anemia, with the following sequences of the first thirty (30) nucleotides: TAC CAC GTG GAC TGA GGA CAC CTC TTC AGA... 1. First transcribe the DNA sequence into the mRNA sequence. 2. Refer to the genetic code to write down the amino acid sequence that these 30 nucleotides encode beginning with the first nucleotide. 3. Generate a random number (1-30) by drawing lots in a bowl. Then locate the DNA nucleotide to "mutate" using the number drawn as the position along the gene. 4. "Roll" the tetrahedron "mutator" dice (see direction below for making the tetrahedron "mutator" dice). Note the letter on the side that is flat on the table. That is the nucleotide that will replace the nucleotide in the DNA at the position decided in the previous step. 5. Write the mutant nucleotide sequence in the row for Mutation 1, then analyze mutation. a. If it is the same nucleotide, write same nucleotide…arrow_forwardHow many mRNA nucleotides does it take to code for a polypeptide that is 30 amino acids long? a. 300 b. 90 c. 30 d. 10arrow_forwardA gene contains the sequence CGCATACGGTAC that results in the amino acid sequence arg-ile-arg-tyr. A mutation in this gene removes the first G in the strand.What is true of this mutation's effect on the phenotype?1.It will affect the phenotype because although most of the protein will be identical, the first amino acid will be different.2.It will not affect the phenotype because the protein will be identical to the original protein.3.It will affect the phenotype because all the amino acids past this point will be different from the original protein.4.It will not affect the phenotype because only the first amino acid is different from the original protein.arrow_forward
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