Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 12.4, Problem 2COMQ
A ribozyme is
a. a complex between RNA and a protein.
b. an RNA that encodes a protein that functions as an enzyme.
c. an RNA molecule with catalytic function.
d. a protein that degrades RNA molecules.
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A ribozyme is
a. a complex between RNA and a protein.
b. an RNA that encodes a protein that functions as an enzyme.
c. an RNA molecule with catalytic function.
d. a protein that degrades RNA molecules.
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
Which of the following BEST describes the characteristics and function of siRNA?
A. a short strand of RNA that can complement and inactivate a sequence of mRNA
B. a short strand of RNA that can act as a transcription factor to initiate transcription
C. a strand of DNA that can bind to and inactivate an mRNA sequence
D. a tRNA that is not able to attach to a ribosome and therefore inhibits the process of translation
Chapter 12 Solutions
Genetics: Analysis and Principles
Ch. 12.1 - 1. Which of the following base sequences is used...Ch. 12.1 - Prob. 2COMQCh. 12.2 - With regard to a promoter, a transcriptional start...Ch. 12.2 - Prob. 2COMQCh. 12.2 - 3. Sigma factor is needed during which stage(s) of...Ch. 12.2 - A uracil-rich sequence occurs at the end of the...Ch. 12.3 - Which RNA polymerase in eukaryotes is responsible...Ch. 12.3 - Prob. 2COMQCh. 12.3 - Prob. 3COMQCh. 12.3 - Prob. 4COMQ
Ch. 12.4 - Which of the following are examples of RNA...Ch. 12.4 - A ribozyme is a. a complex between RNA and a...Ch. 12.4 - Prob. 3COMQCh. 12.4 - Prob. 4COMQCh. 12.5 - 1. Which of the following is not a key difference...Ch. 12 - Prob. 1CONQCh. 12 - Prob. 2CONQCh. 12 - Prob. 3CONQCh. 12 - Prob. 4CONQCh. 12 - 5. Mutations in bacterial promoters may increase...Ch. 12 - Prob. 6CONQCh. 12 - 7. In Chapter 9, we considered the dimensions of...Ch. 12 - 8. A mutation within a gene sequence changes the...Ch. 12 - Prob. 9CONQCh. 12 - At the molecular level, describe how factor...Ch. 12 - Prob. 11CONQCh. 12 - What is the complementarity rule that governs the...Ch. 12 - 13. Describe the movement of the open complex...Ch. 12 - 14. Describe what happens to the chemical bonding...Ch. 12 - Prob. 15CONQCh. 12 - Prob. 16CONQCh. 12 - Prob. 17CONQCh. 12 - Mutations that occur at the end of a gene may...Ch. 12 - If the following RNA polymerases were missing from...Ch. 12 - 20. What sequence elements are found within the...Ch. 12 - 21. For each of the following transcription...Ch. 12 - 22. Describe the allosteric and torpedo models for...Ch. 12 - Which eukaryotic transcription factor(s) shown in...Ch. 12 - 24. The initiation phase of eukaryotic...Ch. 12 - A eukaryotic protein-encoding gene contains two...Ch. 12 - 26. Describe the processing events that occur...Ch. 12 - Prob. 27CONQCh. 12 - Prob. 28CONQCh. 12 - Prob. 29CONQCh. 12 - Prob. 30CONQCh. 12 - 31. In eukaryotes, what types of modifications...Ch. 12 - Prob. 32CONQCh. 12 - Prob. 33CONQCh. 12 - 34. Figure 12.21 shows the products of alternative...Ch. 12 - 35. The processing of ribosomal RNA in eukaryotes...Ch. 12 - Prob. 36CONQCh. 12 - Prob. 37CONQCh. 12 - After the intron (which is in a lariat...Ch. 12 - Prob. 1EQCh. 12 - 2. Chapter 21 describes a technique known as...Ch. 12 - Prob. 3EQCh. 12 - As described in Chapter 21 and in experimental...Ch. 12 - Prob. 5EQCh. 12 - Prob. 6EQCh. 12 - 1. Based on your knowledge of introns and pre-mRNA...Ch. 12 - Discuss the types of RNA transcripts and the...
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- Each ribosomal subunit is composed of a. multiple proteins. c. tRNA. b. rRNA. d. both a and b.arrow_forwardDuring translation, the codon in mRNA is actually “read” by a. the A site in the ribosome. b. the P site in the ribosome. c. the anticodon in a tRNA. d. the anticodon in an amino acid.arrow_forwardWhat site on the ribosome is the place where a tRNA molecule leaves the ribosome after attaching its amino acid to the growing chain of amino acids? a. E site b. P site c. A site d. the small ribosomal subunit Please respond as soon as possiblearrow_forward
- I'm a tRNA that is found in the E site of a ribosome. From this, you KNOW a. I'm participating in the formation of peptide bonds b. I'm going to go through the P site next and lengthen the chain c. I have no amino acid and have already passed through the A and P sites d. I'm going to cause the ribosome to dissociatearrow_forwardA release factor is referred to as a “molecular mimic” because its structure is similar to a. a ribosome. b. an mRNA. c. a tRNA. d. an elongation factor.arrow_forwardThe enzyme Aminoacyl tRNA synthetase a. is very specific, recognizes only amino acids b. adds amino acids to the tRNA anticodon c. is very specific, there is only one enzyme per cell d. is very specific, recognizes only one amino acidarrow_forward
- Which of the following is not involved in the elongation of prokaryotic peptide? a. EE-Tus, EE-Ts, EF-G factors b. mRNA c. peptidyl transferase d. formyl met tRNAarrow_forwardThe “A” site in the ribosome refers to the: A. binding site for charged t-RNA molecules during protein synthesis B. Site that allows for tRNAs to exit C. a site that holds the tRNA which is linked to the growing polypeptide chain D. none of these answeresarrow_forwardWhich of the following is true about the three major classes of RNAs in the cell: mRNAs, tRNAs, and rRNAs? A. mRNAs encode polypeptide chains. B. tRNAs are structural components of the ribosome. C. rRNAs are adapter molecules that translate the information on an mRNA into a polypeptide sequence. D. mRNAs can also encode tRNAs and rRNAs.arrow_forward
- For each of the following, identify the type of RNA involved (mRNA, rRNA, or tRNA). a. Transports the correct amino acid to the ribosome, using the information encoded in the mRNA. b. Is a major component of ribosomes. c. Specifies the order of amino acids in a protein, using a series of three-base codons, where different amino acids are specified by particular codons. d. Contains a three-base anticodon that pairs with a complementary codon revealed in the mRNA. e. Assists in making the bonds that link amino acids together to make a protein.arrow_forwardThe role of transfer RNA (tRNA) is to match a codon (3 bases) in mRNA sequence to: A. An amino acid B. A peptide bond C. An R group D. A start codonarrow_forwardWhich of the following regions on the tRNA are composed of a sequence of nucleotides? a. anticodon that binds to codon in mRNA b. anticodon that binds to codon in ribosomes c. anticodon that binds to codon in tRNA synthetase d. none of the abovearrow_forward
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