Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Textbook Question
Chapter 18, Problem 8TYU
Which of the following statements about the DNA in one of your brain cells is true?
(A) Most of the DNA codes for protein.
(B) The majority of genes are likely to be transcribed.
(C) It is the same as the DNA in one of your liver cells.
(D) Each gene lies immediately adjacent.to an enhancer.
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In the diagram of transcription shown here, fill in the blanks with the appropriate terms: (a) gene; (b) promoter; (c) terminator; (d) RNA polymerase; (e) mRNA.
Which of the following is not true of RNA processing?(A) Exons are cut out before mRNA leaves the nucleus.(B) Nucleotides may be added at both ends of the RNA.(C) Ribozymes may function in RNA splicing.(D) RNA splicing can be catalyzed by spliceosomes.
Which of the following is not a possible outcome of changing the epigenetic code?
a) exposure of regulatory region
b) binding of transcription factors
c) altered gene expression
d) repositioning of nucleosomes by polymerases
Chapter 18 Solutions
Campbell Biology: Custom Edition
Ch. 18.1 - How does binding of the trp corepressor to the trp...Ch. 18.1 - Describe the binding of RNA Polymerase,...Ch. 18.1 - WHAT IF? A certain mutation in E. coli changes...Ch. 18.2 - In general, what are the effects of histone...Ch. 18.2 - MAKE CONNECTIONS Speculate about whether the same...Ch. 18.2 - Compare the roles of general and specific...Ch. 18.2 - Once mRNA encoding a particular protein reaches...Ch. 18.2 - WHAT IF? Suppose you compared the nucleotide...Ch. 18.3 - Compare miRNAs and siRNAs, including their...Ch. 18.3 - WH AT IF? Suppose the mRNA being degraded in...
Ch. 18.3 - MAKE CONNECTIONS Inactivation of one of the X...Ch. 18.4 - MAKE CONNECTIONS As you learned in Chapter 12,...Ch. 18.4 - MAKE CONNECTIONS Explain how the signaling...Ch. 18.4 - How do fruit fly maternal effect genes determine...Ch. 18.4 - Prob. 4CCCh. 18.5 - Prob. 1CCCh. 18.5 - Under what circumstances is cancer considered to...Ch. 18.5 - MAKE CONNECTIONS The p53 protein can activate...Ch. 18 - Compare and contrast the roles of a corepressor...Ch. 18 - Describe what must happen in a cell for a gene...Ch. 18 - Why are miRNAs called noncoding RNAs? Explsin how...Ch. 18 - Describe the two main processes that cause...Ch. 18 - Compare the usual functions of proteins encoded by...Ch. 18 - If a particular operon encodes enzymes for making...Ch. 18 - Muscle cells differ from nerve cells mainly...Ch. 18 - The functioning of enhancers is an example of (A)...Ch. 18 - Cell differentiation always involves (A)...Ch. 18 - Which of the following is an example of...Ch. 18 - What would occur if the repressor of an inducible...Ch. 18 - Absence of bicoid in mRNA from a Drosophila egg...Ch. 18 - Which of the following statements about the DNA in...Ch. 18 - Within a cell, the amount of protein made using a...Ch. 18 - Prob. 10TYUCh. 18 - draw it The diagram below shows five genes,...Ch. 18 - Prob. 12TYUCh. 18 - Prob. 13TYUCh. 18 - SCIENCE. TECHNOLOGY, AND SOCIETY Trace amounts of...Ch. 18 - WRITE ABOUT A THEME: INTERACTIONS In a Short essay...Ch. 18 - SYNTHESIZE YOUR KNOWLEDGE The flashlight fish has...
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- where, in relation to the protein-coding region of a gene, are the binding sites that become occupied by nuclear receptors? (a) upstream, (b) within the coding region, (c) downstreamarrow_forwardWhich statement is false: A) Each type of protein ( ex: hemoglobin vs trypsionngen) varies in the length and amino acid sequence of its peptide B) After the rpocess of transcription is complete, the mRNA that is produced will continue being tranlsated by ribosomes for the rest of the cells life. mRNA never breaks down C) A ribosome will bind to an mRNA and will translate the sequence by reading one codon at a time and adding one amino acid to the peptide chain. It will stop the translation once it encounters a stop codon D) The gene for a protein provides the information on the legth of the peptide, along w the amino acid sequence so the protein can be synthesized by a ribosome E) Once mRNA has left the nucleus, ribosomes will bind to it and will follow the instructions in its sequence to make the new protienarrow_forwardonce transcription is complete gene expression is controlled by..........?!arrow_forward
- At what point in gene expression do you think the process could be regulated? Select all that apply: a) Before transcription begins. b) During the process of transcription. c) During the process of translation. d) After translation ends.arrow_forwardIn eukaryotic cells, transcription cannot begin until(A) the two DNA strands have completely separated and exposed the promoter.(B) several transcription factors have bound to thepromoter.(C) the 5¿ caps are removed from the mRNA.(D) the DNA introns are removed from the template.arrow_forwardWhat are the cellular activities that help describe "expression of genetic information"? (Choose all that applies) Replication Transcription C) Translation Regulationarrow_forward
- When regulatory protein binds to a mature mRNA in the cytoplasm and prevents it from binding to a ribosome, this is an example of: A) transcriptional control B) post-transcriptional control C) post-translational control D) epigenetic control E) translational controlarrow_forwardTranscription and translation are separate processes in gene expression; however, they have similarities. The following terms all relate to translation. Which of these has a role that is most similar to that of the transcription start site during transcription? A)Start codon B)Stop codon C)tRNA D)Amino acidarrow_forwardYou hope to study a gene that codes for a neurotransmitter protein produced in human brain cells. You know the amino acid sequence of the protein. Explain how you might (a) identify what genes are expressed in a specific type of brain cell, (b) identify (and isolate) the neurotransmitter gene, (c) produce multiple copies of the gene for study, and (d) produce large quantities of the neurotransmitter for evaluation as a potential medication.arrow_forward
- Gene Expression: 14) Look at the diagram: a) For each of the molecules in the diagram, identify what type of molecule they are, and label their ends (3',5',N,C). b) For each arrow, name the process and identify the major enzymes involved. c) Where do each of these activities take place in a bacterial cell? In a eukaryotic cell? Draw a picture if it helps you explain it.arrow_forwardA researcher that uses mouse models to understand protein function in the immune system ,genetically engineered one of her mice to be missing a specific protein known as I TK.There is a special term to describe removal of gene function to study the role of the gene.This term is ………..?arrow_forwardIn your own words, explain epigenetics. What is it? What are the main epigenetic marks? What do they do in terms of gene transcription? What are the enzymes involved?arrow_forward
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