Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 13, Problem 5TYU
Summary Introduction
Introduction:
The nucleosome complex consists of the octamer of histone proteins wrapped around DNA. It is made up of basic amino acids like lysine and arginine. This complex helps in the regulation of processes like transcription in the cell. The core complex consists of histones H1 and H5, histones H2A, histone H2B, H3 and H4.
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Students have asked these similar questions
What is a nucleosome?
a. A region in the cell’s nucleus that contains euchromatin
b. A region of DNA wound around histone proteins
c. A region of a chromosome made up of multiple loops of chromatin
d. A 30-nm fiber found in chromatin
In eukaryotic chromosomes, DNA wraps around_____ . a. histone proteins d. centromeres b. sister chromatids e. nucleosomes c. the double helix f. mutations
In a nucleosome, what is the DNA wrapped around?
A. mRNA
B. Nucleolus protein.
C. Ribosomes.
D. Polymerase molecules.
E. Histones
Chapter 13 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 13.1 - Given a polynucleotide sequence such as GAATTC,...Ch. 13.1 - Prob. 2CCCh. 13.2 - What role does base pairing play in the...Ch. 13.2 - Make a table listing the functions of seven...Ch. 13.2 - MAKE CONNECTIONS What is the relationship between...Ch. 13.3 - Describe the structure of a nucleosome, the basic...Ch. 13.3 - What two properties, one structural and one...Ch. 13.4 - Prob. 1CCCh. 13.4 - DRAW IT One strand of a DNA molecule has the...Ch. 13.4 - Describe the role of complementary base pairing...
Ch. 13 - In his work with pneumonia-causing bacteria and...Ch. 13 - What is the basis for the difference in how the...Ch. 13 - In analyzing the number of different bases in a...Ch. 13 - The elongation of the leading strand during DNA...Ch. 13 - Prob. 5TYUCh. 13 - Prob. 6TYUCh. 13 - Prob. 7TYUCh. 13 - Prob. 8TYUCh. 13 - Prob. 9TYUCh. 13 - MAKE CONNECTIONS Although the proteins that cause...Ch. 13 - Prob. 12TYUCh. 13 - FOCUS ON EVOLUTION Some bacteria may be able to...Ch. 13 - FOCUS ON ORGANIZATION The continuity of life is...
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- The form of DNA that contains genes that are actively beingtranscribed is calleda. histones.b. telomeres.c. heterochromatin.d. euchromatin.arrow_forwardDraw a nucleosome, indicating the positions of DNA andproteins.arrow_forwardA nucleosome consists of (a) DNA and scaffolding proteins (b) scaffolding proteins and histones (c) DNA and histones (d) DNA, histones, and scaffolding proteins (e) histones onlyarrow_forward
- After DNA replication, a eukaryotic chromosome _________ . a. consists of two sister chromatids b. has a characteristic X shape c. is constricted at the centromere d. all of the abovearrow_forwardLook at the picture carefully below and imagine inside a cell nucleus. a) encircle and name the parts where DNA is most accessible and least accessible b) how nucleosome positioning or spacing can interfere with DNA accessiblityarrow_forwardDescribe the structure of a nucleosome and explain its importancearrow_forward
- 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.arrow_forwardThe conversion of euchromatin into heterochromatin involvesa. 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.arrow_forwardTreating a cell with a drug to stop tRNA from doing its job would mean what? A. that ribosomes would fall apart B. that sugars woulf not be added to proteins C. that nothing would be available to translate D. that amino acids would not be brought to the growing protein.arrow_forward
- In eukaryotic chromosomes, DNA wraps around _________. a. histone proteins c. centromeres b. sister chromatids d. nucleosomesarrow_forwardExplain how DNA is packed into chromosomes in eukaryotic cells.arrow_forwardDNA plus associated proteins equal? a. chromatin b. chromosome c. chromatid d. nucleosomearrow_forward
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