Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 13, Problem 5MC
Epigenetic modification of gene expression
a. always inhibits gene transcription.
b. always stimulates gene expression.
c. is erased from the DNA following mitotic cell division.
d. may sometimes be transmitted from generation to generation.
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The role of p53 in normal cells is toa. create cancer-blocking mutations.b. trigger unrestrained cell division.c. detect damaged DNA.d. splice exons together in the correct sequence.
Epigenesis relating to genetics refers to which of the following
A.
Genetic information is limited to what we inherit only from our biological parents.
B.
Genes are not influenced by environmental factors.
C.
Genes we inherit are fully expressed at birth.
D.
Genes are turned on or off as needed, by the developing body or environmental triggers, across the life-span
Which of the following statements
concerning p53 is NOT correct?
O a. p53-dependent transcription of target genes leads
to cell cycle arrest or cell death (apoptosis).
O b.
O C.
Loss of p53 function results in loss of checkpoint
controls.
Loss of p53 function creates an environment that
is permissive for genome instability--that is, more
damaged cells with chromosome aberrations and
mutations survive and propagate.
d. p53 is a tumor suppressor protein which is largely
responsible for protecting cells from cancer-
causing DNA-damaging agents.
Chapter 13 Solutions
Biology: Life on Earth (11th Edition)
Ch. 13 - 1. The molecule that carries the genetic...Ch. 13 - 2. Which of the following is not true of...Ch. 13 - 3. A stop codon
a. signals the end of protein...Ch. 13 - Prob. 4MCCh. 13 - Epigenetic modification of gene expression a....Ch. 13 - Prob. 1FTBCh. 13 - The three types of RNA that are essential for...Ch. 13 - 3. The genetic code uses______ (how many?) bases...Ch. 13 - The enzyme_______ synthesizes RNA from the...Ch. 13 - Prob. 5FTB
Ch. 13 - Prob. 6FTBCh. 13 - How does RNA differ from DNA?Ch. 13 - Prob. 2RQCh. 13 - Define the following terms: genetic code, codon,...Ch. 13 - 4. How is mRNA formed from a eukaryotic gene?
Ch. 13 - 5. Diagram and describe protein synthesis.
Ch. 13 - 6. Explain how complementary base pairing is...Ch. 13 - 7. Describe the principal mechanisms of regulating...Ch. 13 - Define mutation. Describe four different effects...Ch. 13 - Many years ago, some researchers reported that...Ch. 13 - Prob. 2AC
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following is NOT a description of an epigenetic modification? A. regulatory patterns that persisis in the absence of the original signal B. stable alterations in gene expression without changes to the underlying DNA sequence C. the persistence of gene expression patterns through cell division D. an intrinsic signal that triggers cell differentiationarrow_forwardTranslational control of gene expression occurs within thea. nucleus.b. cytoplasm.c. nucleolus.d. mitochondria.arrow_forwardFrom the list of answers (A-D) below, select the correct anwer(s). There may be more than one answer. B. During the process of cell division all epigenetic changes are lost. A. Epigenetic changes survive cell division. C. Epigenetic changes have NO role in cell differentiation. D. Each of the 200 types have the same genome, but distinct epigenome, which is important for the process of cell differentiation.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_forwardEpigenetics works by Select one: a. activating DNA ligases so they can clip attached methyl groups off. O b. activating DNA polymerases so thymine is more readily attached to the lead gene. c. blocking the cell's ability to read certain genes. O d. blocking the cell's ability to undergo cytokinesis.arrow_forwardThe protein that ensures the fidelity of DNA replication is the a. tumor repressor P53 protein. b. Mitotic arrest deficient protein. c. transcription factor E2F protein. d. Ataxia telangiectasia mutated protein.arrow_forward
- How does gene activation lead to cell differentiation? Explain the correct answer and explain why the others are wrong. A. Different genes are activated in different cells, causing each cell to have a unique funcation B. The same genes are actives in every cell of your body, causing every cell to function the same C. Certain cells only have parts of DNA that causes cell deferentiation D. Unique genes are in different cells, causing each cell to have a unique functionarrow_forwardTranscription factors such as myoD control gene expression in which of the following ways? Group of answer choices A. direct control of transcription of specific genes B. control of the cell cycle C. general control of transcription through chromatin modification D. control of RNA splicing E. control of translationarrow_forwardEpigenetic control of gene expressiona. is hereditary. c. adds methyl groups to cytosine.b. locks genes “ON.” d. Two of thesearrow_forward
- Epigenetic marks regulate gene expression. Which epigenetic mark is NOT associated with positive gene expression? A. Histone acetylation B. Histone Methylation C. De-methylated DNA D. Methylated DNAarrow_forwardTranscription factors such as myoD control gene expression in which of the following ways? Group of answer choices ONLY ONE RIGHT ANSWERZ: A. direct control of transcription of specific genes B. control of the cell cycle C. general control of transcription through chromatin modification D. control of RNA splicing E. control of translationarrow_forwardA mutation in the p53 gene creates a misfolded protein that is overactive. This scenario would most likely __________ cellular division. If the mutation affected the protein’s beta-sheets, it most likely affected the protein’s __________ conformation. Select one: a. decrease, primary b. decrease, secondary c. increase, primary d. increase, secondaryarrow_forward
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