CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
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Textbook Question
Chapter 11, Problem 1CC
Complete the following concept map to test your knowledge of gene regulation.
Expert Solution & Answer
Summary Introduction
To complete: The given map showing a process of gene regulation.
Introduction: Gene regulation is a process where the expression of genes are controlled for the synthesis of specified gene products (usually RNA or proteins).
Answer to Problem 1CC
The Fig.1 provides the process of gene regulation in the two domains of the living organisms: the prokaryotes and eukaryotes.
Pictorial representation: Figure 1 shows the completed map of the gene regulation in prokaryotes and eukaryotes.
Fig. 1: Gene regulation in prokaryotes and eukaryotes
Explanation of Solution
(a)
Correct answer: Proto-oncogenes.
Explanation: Proto-oncogenes are the common genes which are transformed into oncogenes (malignant genes) during mutation. These mutations can lead to indefinite proliferation of cells.
(b)
Correct answer: Repressor or activator.
Explanation: They are the molecules which regulates the transcription. Activators are transcription factors that activate or boost a gene to express and the repressors are the molecules that stop the expression of a gene.
(c)
Correct answer: Cancer.
Explanation: Cancer is a diseased condition where the normal cells get converted to abnormal cells through undifferentiated and uncontrolled growth.
(d)
Correct answer: Operator.
Explanation: Operator is a part of the operons which regulates the binding of a repressor molecule to it. The transcription is stopped when the repressor binds to the operator, thereby it blocks the further binding of RNA polymerase to initiate the transcription.
(e)
Correct answer: X-inactivation.
Explanation: The process of inactivation of single copy of X chromosomes in female mammals is called as X-inactivation.
(f)
Correct answer: Transcription factors.
Explanation: The proteins that are associated with the transcription of DNA to mRNA are called as transcription.
(g)
Correct answer: Alternative RNA splicing.
Explanation: Alternative splicing (differential splicing) is the process of regulation during a gene expression to produce a single gene which can code for different proteins. Final product of alternative splicing will be a processed mRNA.
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Students have asked these similar questions
Given the following schematic for a gene and its associated regulatory regions, answer the following questions by placing the correct letter in the provided blanks
please put in the correct letter for the questions
What region would provide cell type-specific expression of genes? region
What site would significantly increase gene expression rates? = region
What region or regions of this gene’s coding sequence are expressed as amino acids = region
Indicate (x) if the following statements about synthesis of proteins containing an ER
signal sequence are True or False:
True False
i. Translation is initiated by ribosomes located on the ER membrane
The signal recognition particle (SRP) binds a sequence of nonpolar
(hydrophobic) amino acids.
ii.
iii.
The ER signal sequence may be cleaved by signal peptidase on the
cytoplasmic side of the ER membrane.
iv.
The part of a transmembrane protein that will ultimately be located
outside of the cell is inserted into the lumen of the ER during
translation.
A stop transfer sequence is a series of polar amino acids that halts
translocation of a newly synthesized peptide into the ER lumen.
Which of the following statements did Yamanaka rely on to produce induced pluripotent stem cells (IPSC)? [Note: This is higher level thinking. All statements on their own are
correct and may be related to IPSC production but there is only one statement that played an essential role in the production of IPSC)
O A. A proportion of embryonic stem cells can differentiate into adult stem cells.
B. Only a small proportion of genes are expressed in each celI.
C. Telomerase is active in pluripotent stem cells.
D. All genes retain the potential to be expressed.
Chapter 11 Solutions
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
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