Microbiology: An Introduction
11th Edition
ISBN: 9780321733603
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case
Publisher: Benjamin Cummings
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Chapter 8, Problem 9MCQ
Two offspring cells are most likely to inherit which one of the following from the parent cell?
- a. a change in a
nucleotide in mRNA - b. a change in a nucleotide in tRNA
- c. a change in a nucleotide in rRNA
- d. a change in a nucleotide in DNA
- e. a change in a protein
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What genetic material in a living cell which is single stranded involved in the coding of genes for protein synthesis? *
1 point
a. DNA
b. RNA
C. mRNA
d. tRNA
Two cells use the same segment of DNA to produce two different proteins. The mRNA transcribed by cell A contains more introns than does the mRNA produced by cell B. Which of the following is true about the proteins of these cells?
A.
The protein for cell A is longer.
B.
The protein for cell A is shorter.
C.
Cell A produces more of this protein.
D.
Cell A produces less of this protein.
The portion of a gene that will be expressed in a protein is called a(an)
a. Exon
b. Intron
c. promoter
d.TATA box
Chapter 8 Solutions
Microbiology: An Introduction
Ch. 8 - Briefly describe the components of DNA, and...Ch. 8 - DRAW IT Identify and mark each of the following on...Ch. 8 - Match the following examples of mutagens. Column A...Ch. 8 - The following is a code for a strand of DNA. a....Ch. 8 - Prob. 5RCh. 8 - Identify when (before transcription, after...Ch. 8 - Which sequence is the best target for damage by UV...Ch. 8 - You are provided with cultures with the following...Ch. 8 - Why are mutation and recombination important in...Ch. 8 - NAME IT Normally a commensal in the human...
Ch. 8 - Nucleoside analogs and ionizing radiation are used...Ch. 8 - Replication of the E. coli chromosome takes 40 to...Ch. 8 - Pseudomonas has a plasmid containing the mer...Ch. 8 - Match the following terms to the definitions in...Ch. 8 - Match the following terms to the definitions in...Ch. 8 - Feedback inhibition differs from repression...Ch. 8 - Bacteria can acquire antibiotic resistance by all...Ch. 8 - Suppose you inoculate three flasks of minimal...Ch. 8 - Plasmids differ from transposons in that plasmids...Ch. 8 - Mechanism by which the presence of glucose...Ch. 8 - The mechanism by which lactose controls the lac...Ch. 8 - Two offspring cells are most likely to inherit...Ch. 8 - Which of the following is not a method of...Ch. 8 - Ciprofloxacin, erythromycin, and acyclovir are...Ch. 8 - HIV, the virus that causes AIDS, was isolated from...Ch. 8 - Human herpesvirus-8 (HHV-8) is common in parts of...
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- Which molecule contains the genetic code? A. rDNA B. rRNA C.Ribosome D. mRNA E. tRNAarrow_forwardWhat type of molecule contains the site where amino acids link together to make a polypeptide? a. DNA b. mRNA c. rRNA d. tRNA An inborn error of metabolism is when a _____ causes a deficiency in a particular enzyme. a. genetic change b. protein deficiency c. vitamin deficiency d. viral diseasearrow_forwardWhich of the following statements about genes is incorrect? Select one: O a. During fertilization, both the sperm and the ovum contribute genes to the resulting fertilized egg. b. Genetic differences can result from changes in the DNA called mutations. O c. Genes correspond to segments of DNA. d. Under normal circumstances, each chromosome contains precisely one gene. e. Many genes contain the information needed for cells to synthesize enzymes and other proteins.arrow_forward
- You may have left high school thinking that the definition of a gene is: "a sequence of DNA that codes for a protein.” But that is not quite correct If that was in fact the only sequence of DNA that was transcribed, which of the following would not exist? 1. snRNA 2. ribosomes 3. tRNA 4. mRNA 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_forwardWhich of the following molecule functions in the SAME compartment in which it is synthesized? A. mRNA B. tRNA C. snRNA D. rRNAarrow_forwardWhat might best explain why the incidence of cancer increases as people age? Select one: a. mutations accumulate as people age b. cell division increases as people age c. protein synthesis increases as people age d. telomerase activity increases as people age e. ATP production increases as people agearrow_forward
- Which 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_forwardWhat is the correct order of parts in a eukaryotic gene? A. promoter, intron, terminator, exon B. promoter, terminator, exon, intron C. promoter, intron, exon, terminator D. promoter, exon, intron, terminatorarrow_forwardYou are working in the lab and have measured the size of mRNA that has been transcribed from a particular gene in your cell population. The length of the gene in the cells you are working, measured from the start to the stop sequence is 9000 nucleotides. When you measure the RNA, however, the size is only 3000 nucleotides. What do you think happened? O a. Three DNA base pairs code for one RNA nucleotide. b. mRNA does not contain exons. c. There must have been a deletion mutation in the DNA in these cells. Od. The poly-A tail is present in the DNA but not on the mRNA. Oe. RNA splicing occurred, so introns are removed in the mRNA.arrow_forward
- which event contradicts the central dogma of molecular biology?arrow_forwardWhich of the following statament is NOT TRUE about gene expression?a. The expression of genes that code for proteins includes two stages: replication and translationb. Translation is the synthesis of a polypeptide using the information in the mRNA.c. During gene expression, the information encoded in genes is used to make specific polypeptide chains or RNA molecules.d. Gene expression is the process by which DNA directs the synthesis of proteinsarrow_forwardGiven: 3' TAC CAG TTA AGC CTC GGT ATC CAG GAT ACG 5' What would be the first 10 bases at the 5' end of the complementary strand? A. 5' TCG CGTATC C 3' C. 5' GGC TTA ACT G 3' E. none of the choices B. 5' ATG GTC AATT 3' D. 5' CGT ATC CTG G 3' WRITE THE CAPITAL LETTER OF YOUR ANSWER.arrow_forward
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