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 6RQ
Which event contradicts the central dogma of molecular biology?
- Poly-A polymerase enzymes process mRNA in the nucleus
- Endonuclease enzymes splice out and repair damaged DNA
- Scientists use reverse transcriptase enzymes to make DNA from RNA
- Codons specifying amino acids are degenerate and universal.
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Protein synthesis is a complicated process involving DNA being transcribed to RNA, which is then translated into amino acids.
Complete the DNA-to-amino acid table for three consecutive codons with the appropriate nucleotides and amino acids using a
codon table. Nucleotide and amino acid options can be used multiple times or not at all.
5' to 3' DNA strand
T
T
A
G
A
G
3' to 5' DNA strand
A
A
T
C
T
C
G
C
G
transcribed mRNA
U
U
A
G
A
G
C
G
C
TRNA anticodon
A.
A
U
C
U
G
C
G
amino acid
leucine
glutamic acid
Answer Bank
A
glutamic acid
leucine
cysteine
arginine
proline
U
Determine what amino acid will be formed from the given DNA strand below:
3’ T A C A T G C C G A A T 5’
Note: Prepare the partner strand of this DNA. Discuss how will replication happen by mentioning the enzyme needed then transcribe to form mRNA. Discuss what will happen to mRNA, then translate, mentioning the anticodon to be used. Look at the genetic code to know what amino acid will become part of the polypeptide chain.
1. Partner DNA strand
2. the mRNA strand
3. the tRNA
4. the formed amino acids
DNA
RNA
000000O Protein
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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- Protein synthesis is a complicated process involving DNA being transcribed to RNA, which is then translated into amino acids. Complete the DNA-to-amino acid table for three consecutive codons with the appropriate nucleotides and amino acids using a codon table. Nucleotide and amino acid options can be used multiple times or not at all. 5' to 3' DNA strand 3' to 5' DNA strand transcribed mRNA tRNA anticodon amino acid arginine cysteine leucine T A U A T G A U arginine leucine A proline T A U Answer Bank A G G с с T T A A U glutamic acid U G C G с с glutamic acid G G G с с G C arginine C G с Garrow_forwardRefer to a genetic code table for the question. below is a portion of the template strand of a particular gene sequence. Which of the following would be the correct sequence of amino acids in the protein that this portion of the gene encodes? (Note that there are no entrance in this gene sequence, and this portion is found in the middle of the coding sequence, past the start codon, so you should transcribe and translate the entire portion of this sequence) template DNA : 3' - ACG GGT TCC TTT AAC GCG TAG -5' A) Thr-Gly-Ser-Phe-Asn-Ala B) Cys-Pro-Arg-Lys-Leu-Arg-Ile C) there is not enough information given to determine the amino acid sequence of this portion of the gene .arrow_forwardUsing the example above, transcribe the following DNA strand into mRNA and translate that strand into a polypeptide chain, identifying the codons, anticodons, and amino acid sequence.arrow_forward
- Several different nucleic acids are involved in the process of getting a protein produced from a gene. DNA contains the "genetic code" for the protein. DNA is double-stranded, but only one strand is transcribed into MRNA. The MRNA then goes into the cytoplasm where it is translated into protein with the help of TRNA. At each stage of the process, there is base complementarity (A pairs with T/U and C pairs with G) between the nucleic acids involved to ensure the integrity of the DNA blueprint for the protein being produced. Therefore, some of the four strands of nucleic acids involved will match (except U replaces T in RNA) and some will have base complementarity. Indicate whether there is matching (1) or base complementarity (2) between the following nucleic acids. DNA sense strand and MRNA DNA sense strand and tRNA DNA antisense strand and MRNA MRNA and TRNAarrow_forwardAt least three types of RNA are required for protein synthesis. Compare and contrast mRNA, rRNA, and tRNA by moving the descriptions of their structure and function to the appropriate categories. Some phrases may describe all three types of RNA. mRNA in eukaryotes, can exist outside the nucleus acts as an enzyme for peptide synthesis composed of ribonucleic acid rRNA Answer Bank moves amino acids to the site of protein synthesis tRNA contains nucleotide triplets that code for specific amino acids has a convoluted structure with a three-base sequence called an anticodon moves genetic information out of the nucleus and into the cytoplasm mRNA, rRNA, and tRNAarrow_forwardUsing the example above, transcribe the following DNA strand into mRNA and translate that strand into a polypeptide chain, identifying the codons, anticodons, and amino acid sequence. DNA: A T A C G A A A T C G C G A T C G C G G C G A T T C G G mRNA: Codon: Anticodon: Amino Acids:arrow_forward
- Which of the following statements are true? Each stop codon also codes for an amino acid Each codon in mRNA codes for exactly one amino acid The start codon also codes for an amino acid Each TRNA will base pair with only one codon There are multiple codons possible for nearly all amino acids Each TRNA carries exactly one type of amino acid Each anticodon in tRNA pairs with exactly one codon Each codon in TRNA codes for exactly one amino acidarrow_forwardBelow is the 5’–3’ strand of a double-stranded DNA molecule with the following nucleotidesequences (all belong to an exon):5’ C C T A T G C A G T G G C C A T A T T C C A A A G C A T A G C 3’ 1. If the above DNA strand is the template (antisense) strand and the DNA molecule is transcribed that produced a functional mRNA. Assuming there are no mutations, the said mRNA is then brought to the site of protein synthesis,a. what would be the amino acid sequence of the synthesized polypeptide chain?b. how many possible kinds of tRNA molecule that will bring the 2nd amino acid observing wobble hypothesis? List down their anticodons.arrow_forwardBriefly describe the function of the following in protein synthesis. a. rRNA b. tRNA c. mRNAarrow_forward
- Eukaryotic mRNA: usessnRNPs to cut out introns and seal together translatableexons. uses a spliceosome mechanism made of DNA to recognizeconsensus sequences to cut and splice. has a guanine cap on its 39 end and a poly(A) tail on its 59 end. is composed of adenine, thymine, guanine, and cytosine. codes the guanine cap and poly(A) tail from the DNAtemplate.arrow_forwardIn cells, proteins are synthesized from a gene sequence via the process of transcription and translation. Which of the following complementary base pairings would you observe during the synthesis (the making) of a prokaryotic protein? [I am looking for the complementary base pairing(s) you would see as you go from a gene to a protein. Note that it is prokarryotic protein and not eukaryotic protein]. DNA with mRNA mRNA with tRNA mRNA with rRNA rRNA with tRNA A. 1, 2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1, 2, 3 and 4 are correctarrow_forwardIn your own wordsarrow_forward
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