Biology
4th Edition
ISBN: 9781259188121
Author: Peter Stiling, Robert Brooker, Linda Graham, Eric Widmaier
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 11, Problem 10TY
The conversion of euchromatin into heterochromatin involves
- a. the formation of more nucleosomes.
- b. the formation of less nucleosomes.
- c. a greater compaction of loop domains.
- d. a lesser compaction of loop domains.
- e. both a and c.
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Which of the following represents the order of increasingly higher levels of organization of chromatin?
Select one:
O a. looped domain, nucleosome, 30-nm chromatin fiber
O b.
30-nm chromatin fiber, nucleosome, looped domain
C.
nucleosome, looped domain, 30-nm chromatin fiber
O d. looped domain, 30-nm chromatin fiber, nucleosome
nucleosome, 30-nm chromatin fiber, looped domain
е.
Which of the following statements is NOT true about chromatin architecture?
A. The histone tails on heterochromatin are deacetylated
B. Heterochromatin is heavily methylated
C. Euchromatin is more likely to contain genes that are expressed at that time
D. Euchromatin is heavily methylated
What is the difference between heterochromatin and euchromatin in terms of:
A. Gene expression
B. Dye staining
C. Nuclease sensitivity
D. Level of acetylation
E. Chromosome territory location
Chapter 11 Solutions
Biology
Ch. 11.1 - Prob. 1BCCh. 11.1 - Prob. 1EQCh. 11.1 - Prob. 2EQCh. 11.1 - CoreSKILL In the experiment of Avery, MacLeod,...Ch. 11.2 - Prob. 1CCCh. 11.2 - Prob. 2CCCh. 11.2 - Prob. 3CCCh. 11.2 - Prob. 4CCCh. 11.3 - If this experiment was conducted for four rounds...Ch. 11.4 - Molecular Mechanism of DNA Replication Concept...
Ch. 11.4 - Prob. 2CCCh. 11.4 - Prob. 3CCCh. 11.4 - Prob. 4CCCh. 11.5 - Prob. 1CCCh. 11.5 - Prob. 2CCCh. 11.5 - Prob. 1BCCh. 11 - Why did researchers initially believe that the...Ch. 11 - Prob. 2TYCh. 11 - Which of the following equations is accurate...Ch. 11 - Prob. 4TYCh. 11 - Which of the following statements about the...Ch. 11 - Meselson and Stahl were able to demonstrate...Ch. 11 - During replication of a DNA molecule, the daughter...Ch. 11 - Prob. 8TYCh. 11 - A nucleosome is a. a dark-staining body composed...Ch. 11 - The conversion of euchromatin into heterochromatin...Ch. 11 - What are the four key criteria that the genetic...Ch. 11 - A double-stranded DNA molecule contains 560...Ch. 11 - Prob. 3CQCh. 11 - Prob. 1COQCh. 11 - CoreSKILL How might you provide evidence that DNA...
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- The nuclear matrix composition: a. lamina, nucleosome b. cortex, lamina, c. nucleosome d. lamina, interchromatin networkarrow_forwardWhich of the following is associated with active chromatin? Check all that apply. A. Centromeres B. heterochromatin C. histone acetylation D. Polytene puffs E. metaphase chromasomes F. transcription of machineryarrow_forwardAll of the following regarding ribosomes are true EXCEPT: A. Ribosomes are comprised of protein and RNA. B. Ribosomes coordinate with initiation and elongation factors to regulate translation. C. Ribosomes bind transcripts in their promoters. D. Prokaryotic ribosomes are comprised of a large and a small subunit. E. Ribosomes in eukaryotic cells bind to complete transcripts.arrow_forward
- Loosening the chromatin structure occurs because of Select one: a. Lysine methylation b. Lysine acetylation c. Lysine phosphorylation d. Lysine sumoylationarrow_forwardHistones form more accessible chromatin because of Select one: a. Reduced electrostatic attraction between the histone and the negatively charged DNA backbone b. Increased electrostatic attraction between the histone and the negatively charged DNA backbone c. Reduced covalent bonding between the histone and the negatively charged DNA backbone d. Increased covalent bonding between the histone and the negatively charged DNA backbonearrow_forwardWhich of the following may produce more than one functional protein from an mRNA transcript?a. chromatin condensation b. transcriptional regulation c. epigeneticsd. alternative mRNA processingarrow_forward
- Which of these is NOT true of nucleosomes? A. Some post-translational modifications to histone proteins serve as binding sites for transcription factors. B. The position of nucleosomes is fixed on the genome and can not be changed. C. The position and post-translational modifications of histones can be inherited through mitosis. D. The binding between DNA and histone proteins can be disrupted by post-translational modifications.arrow_forwardExplain wellarrow_forwardAn increase in HDACS can lead to which of the following? A. Increase in deacetylation of histones. B. Decrease in transcription. C. Increase in heterochromatin state. D. All of the above.arrow_forward
- You are investigating the transport of proteins into the ER in various mutant cells. Where would you expect to find ER proteins in a cell in which the gene encoding TOM proteins have been knocked out? a. Proteasome b. Cytoplasm c. Mitochondria d. nucleus e. ERarrow_forwardMethylated cytosines may be associated with a. telomere repeats b. mutation hotspots c. centromere regions d. rancid breakfast cereal e. euchromatinarrow_forwardWhich of the following statements correctly describes the structure of chromatin around the promoter of an active eukaryotic gene? O A. It is in the form of heterochromatin and the nucleosomes are tightly wrapped. O B. It is in the form of euchromatin and the nucleosomes are cleared from the region allowing for an open and accessible configuration OC.A repressor protein is bound to the chromatin blocking RNA polymerase. O D.Both B and C.arrow_forward
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