Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 16, Problem 11RQ
Which of the following are true of epigenetic changes?
- allow DNA to be transcribed
- move histones to open or close a chromosomal region
- are temporary
- all of the above
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Define epigenetics. Are all epigenetic changes passed from parentto offspring? Explain.
Transmission of information that is not contained within the sequence of DNA to daughter cells at cell division is called epigenetic inheritance.
true
false
Which of the following types of mutations would be most likely to cause cells to undergo apoptosis (programmed cell death)?
One that increases the affinity of p21 for Cdks
One that decreases the affinity of Rb for the transcription factor E2F
One that decreases the ability of p53 to bind to DNA
One that causes p53 to be constitutively phosphorylated
Chapter 16 Solutions
Biology 2e
Ch. 16 - Figure 16.5 In E. coli, the tip operon is on by...Ch. 16 - Figure 16.7 In females, one of the two X...Ch. 16 - Figure 16.13 An increase in phosphorylation levels...Ch. 16 - Control of gene expression in eukaryotic cells...Ch. 16 - Post-translational control refers to: regulation...Ch. 16 - How does the regulation of gene expression support...Ch. 16 - If glucose is absent, but so is lactose, the lac...Ch. 16 - Prokaryotic cells lack a nucleus. Therefore, the...Ch. 16 - The a/a operon is an inducible operon that...Ch. 16 - What are epigenetic modifications? the addition of...
Ch. 16 - Which of the following are true of epigenetic...Ch. 16 - The binding of _____ is required for transcription...Ch. 16 - What will result from the binding of a...Ch. 16 - A scientist compares the promoter regions of two...Ch. 16 - Which of the following are involved in post...Ch. 16 - Binding of an RNA binding protein will the...Ch. 16 - An unprocessed pre-mRNA has the following...Ch. 16 - IS. Alternative splicing has been estimated to...Ch. 16 - Post-translational modifications of proteins can...Ch. 16 - A scientist mutates elF-2 to eliminate its GTP...Ch. 16 - Cancer causing genes are called transformation...Ch. 16 - Targeted therapies are used in patients with a set...Ch. 16 - Name two differences between prokaryotic and...Ch. 16 - Describe how controlling gene expression will...Ch. 16 - Describe how transcription in prokaryotic cells...Ch. 16 - What is the difference between a repressible and...Ch. 16 - In cancer cells, alteration to epigenetic...Ch. 16 - A scientific study demonstrated that rat mothering...Ch. 16 - Some autoimmune diseases show a positive...Ch. 16 - A mutation within the promoter region can alter...Ch. 16 - What could happen if a cell had too much of an...Ch. 16 - A scientist identifies a potential transcription...Ch. 16 - Describe how RBPs can prevent miRNAs from...Ch. 16 - How can external stimuli alter...Ch. 16 - Protein modification can alter gene expression in...Ch. 16 - Alternative forms of a protein can be beneficial...Ch. 16 - Changes in epigenetic modifications alter the...Ch. 16 - A scientist discovers a virus encoding a Protein X...Ch. 16 - New drugs are being developed that decrease DNA...Ch. 16 - How can understanding the gene expression pattern...
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- In 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_forwardWhich of the following statements does not accurately complete this statement: An epigenetic trait _________. can be passed from mother cell to daughter cell by mitosis can be passed to the next generation by meiosis is a change in the DNA sequence causes changes in gene expression All are accurate Of the following, which is a good example of epigenetic changes? methylation of DNA bases addition of acetyl groups to histones CpG islands imprinting of genes All are good examples of epigenetic changesarrow_forwardWhat types of behaviours or environmental circumstances can lead to changes in an individual’s epigenome? Explain.arrow_forward
- Choose only one option:arrow_forward// Which CDK and cyclin does p53 ultimately target in DNA damaged conditions? O CDK1/cyclin E O CDK2/cyclin E CDK1/cyclin B CDK2/cyclin Barrow_forwardYou are working in a cell biology lab that investigates non-small cell lung cancer cells, which of these cellular features will be suggestive of senescence in the cells observed? Choose all that apply: Group of answer choices Large flattened morphology Reduced incorporation of 5-bromodeoxyuridine (in DNA replication) Increased p53 expression Decreased expression of p15INK4Barrow_forward
- How the epigenetic states are transmitted via mitosis and meiosis ?arrow_forwardIn a few sentences, describe how p53 guards the genome. Include at least two specific ways that p53 guards the genome. In a few more sentences, describe the structure and function of the p53 protein. Structure: what domains are present in the p53 protein? Do p53 work as a single protein or as part of a complex? Function: what do the different domains do? How can p53 do so many different things?arrow_forwardWhat are the main epigenetics mechanisms?arrow_forward
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