Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 18, Problem 18TYK
Summary Introduction
Introduction: The genes that are involved in production of enzymes concerned with similar
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Which statement/s is/are TRUE about transcription?A. During transcription, DNA polymerase binds to RNA and separates the DNA strands.B. RNA polymerase uses one strand of DNA as a template to assemble nucleotides into a strand of RNA.C. RNA polymerase binds only to DNA promoters, which have specific base sequences.D. Promoters are signals in RNA that indicate to RNA polymerase where to begin transcription.E. Transcription occurs in the 3’ to 5’ direction with respect to the growing mRNA strand.
What is one function of TFIIH during transcription?
a.
Recruiting the TATA-box binding protein to the TATA-box.
b.
Terminating transcription via factor-dependent termination.
c.
Capping the 5' end of mRNA with 7-methylguanylate.
d.
Phosphorylating the CTD of RNA polymerase.
How is the expression of genes controlled at the chromosomal level?
A.
DNA can synthesize extra histones as needed
B.
DNA can either be condensed into heterochromatin or decondensed into euchromatin
C.
DNA can be unwound into euchromatin to reduce the level of expression
D.
The expression of DNA can only be controlled at the transcriptional level
E.
DNA is spontaneously deleted from a chromosome if not needed
Chapter 18 Solutions
Study Guide for Campbell Biology
Ch. 18 - In the following diagram of the lac operon, an...Ch. 18 - a. Repressible enzymes usually function in _____...Ch. 18 - a. Give an example of highly methylated and...Ch. 18 - Label the components of the following diagram that...Ch. 18 - a. How is the process of alternate RNA splicing...Ch. 18 - a. Describe how miRNAs regulate gene expression....Ch. 18 - a. What is the difference between determination...Ch. 18 - What type of evidence established that Bicoid...Ch. 18 - a. List three genetic changes that can convert a...Ch. 18 - Complete the following concept map to help you...
Ch. 18 - Fill in the following table to help you organize...Ch. 18 - Prob. 3SYKCh. 18 - Prob. 1TYKCh. 18 - Prob. 2TYKCh. 18 - Prob. 3TYKCh. 18 - Prob. 4TYKCh. 18 - Prob. 5TYKCh. 18 - DNA methylation of cytosine bases a. initiates the...Ch. 18 - Which of the following is not true of enhancers?...Ch. 18 - Prob. 8TYKCh. 18 - A eukaryotic gene typically has all of the...Ch. 18 - Prob. 10TYKCh. 18 - Prob. 11TYKCh. 18 - Which of the following statements explains why a...Ch. 18 - Prob. 13TYKCh. 18 - Prob. 14TYKCh. 18 - Prob. 15TYKCh. 18 - Prob. 16TYKCh. 18 - What would be the fate of a Drosophila larva that...Ch. 18 - Prob. 18TYKCh. 18 - Prob. 19TYKCh. 18 - Prob. 20TYKCh. 18 - Prob. 21TYKCh. 18 - Prob. 22TYKCh. 18 - Prob. 23TYKCh. 18 - Which of the following would most likely account...
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- A particular gene is transcribed in the liver and pancreas cells, but not in other organs. Explain how this transcriptional is achieved. In your answer explain the role of enhancers and transcription factors.arrow_forwardA signaling pathway causes a transcription factor binding to a particular promoter. What effect does this have on the cell? O A. The DNA region near the promoter becomes more methylated. O B. The DNA region near the promoter becomes less methylated. O C. The gene related to this promoter has increased transcription. D. The gene related to this promoter has decreased transcription. red MacBook Air 吕口 F3 D00 F4 F6 F7 F8 88 # $ % & * 2 3 4 6 7 8arrow_forwardDescribe the signaling pathway used by a small hydrophobic ligand (like a steroid) to cause a change in transcription. Then describe one specific signaling pathway used by a hydrophilic ligand (like a protein) to cause a change in transcription.arrow_forward
- Post-translational control refers to: a. regulation of gene expression after transcription b. regulation of gene expression after translation c. control of epigenetic activation d. period between transcription and translationarrow_forwardA transcription factor (protein - orange/green) is bound to a promoter of a gene (DNA - blue) it regulates. What changes would result in the gene not being expressed? A. Mutations in the DNA sequence where the TF is bound B. Mutations in the DNA binding domain of the TF C. Mutations in the 3’UTR (untranslated region) of this gene A and B only B and C only A, B, and Carrow_forwardWhat is the effect of high levels of glucose on the lac operon?a. Transcription is stimulated.b. Little transcription takes place.c. Transcription is not affected.d. Transcription may be stimulated or inhibited, depending on the levels of lactosearrow_forward
- What are epigenetic modifications? a. the addition of reversible changes to histone proteins and DNA b. the removal of nucleosomes from the DNA c. the addition of more nucleosomes to the DNA d. mutation of the DNA sequencearrow_forwardGive typing answer with explanation and conclusion to all parts What would happen to the overall process of making proteins (transcription-translation) if the pores in the nuclear envelope were blocked? Q10. Suppose that an mRNA transcript consists of the following sequence of bases: AUGCCAGGUUAUGUCUAG. a. What sequence of amino acids would this translate to? b. Now suppose that a mutation takes place in the DNA so that twelfth base changes from U to G. How does this change the meaning of the 4th amino acid? (I.e., what does it change to?) c. Would the result be a normal protein? EXPLAIN SPECIFICALLY WHY OR WHY NOT.arrow_forwardWhat are the role of transcription proteins? Explain briefly at your own wordsarrow_forward
- Combinatorial control refers to the phenomenon that a. transcription factors always combine with each other when regulating genes. b. the combination of many factors determines the expression of any given gene. c. small effector molecules and regulatory transcription factors are found in many different combinations. d. genes and regulatory transcription factors must combine with each other during gene regulation.arrow_forwardExplain how transcription regulators in eukaryotic cells are able to act at a great distance from the promoter of a gene. 2-3 sentencesarrow_forwardMutations that occur at the end of a gene may alter the sequence of the gene and prevent transcriptional termination. A. What types of mutations would prevent ρ-independent termination? B. What types of mutations would prevent ρ-dependent termination? C. If a mutation prevented transcriptional termination at the end of a gene, where would gene transcription end? Or would it end?arrow_forward
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