Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 16.3, Problem 1CC
Describe the structure of a nucleosome, the basic unit of DNA packing in eukaryotic cells.
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Describe the structures of a nucleosome and a 30-nm fiber
Describe the structure of nucleosome
( please keep it short as much as you can ) .
Which one of the following statements about nucleosomes is false?
a) The DNA double helix wraps around the nucleosome.
b) The sequence of amino acid in a histone tail is altered during chromatin remodeling.
c) A nucleosome is composed of 8 histone proteins; two copies of each type of histone.
d) A large percent of the nucleosome is positively charged.
Chapter 16 Solutions
Campbell Biology
Ch. 16.1 - Given a polynucleotide sequence such as GAATTC,...Ch. 16.1 - VISUAL SKILLS Griffith was trying to develop a...Ch. 16.2 - What role does complementary base pairing play in...Ch. 16.2 - Identify two major functions of DNA pol III in DNA...Ch. 16.2 - Prob. 3CCCh. 16.2 - Prob. 4CCCh. 16.3 - Describe the structure of a nucleosome, the basic...Ch. 16.3 - Prob. 2CCCh. 16.3 - MAKE CONNECTIONS Interphase chromosomes appear to...Ch. 16 - What does it mean wheti we say that the two DNA...
Ch. 16 - DRAW IT Redraw the Punnett Square on The right...Ch. 16 - Prob. 16.3CRCh. 16 - In his work with pneumonia-causing bacteria and...Ch. 16 - What is the basis for tlie difference in how the...Ch. 16 - In analyzing the number of different bases in a...Ch. 16 - The elongation of the leading Strand during DNA...Ch. 16 - In a nucleosome, the DNA is wrapped around (A)...Ch. 16 - E. coli cells grown on, 15N medium are transferred...Ch. 16 - A biochemist isolates, purifies, and combines in a...Ch. 16 - The spontaneous loss of amino groups from adenine...Ch. 16 - MAKE CONNECTIONS Although the proteins that cause...Ch. 16 - EVOLUTION CONNECTION Some bacteria may be able to...Ch. 16 - SCIENTIFIC INQUIRY DRAW IT Model building can be...Ch. 16 - Prob. 12TYUCh. 16 - Prob. 13TYU
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- Define replication, transcription, and translation. In what part of the cell does each process occur?arrow_forwardDescribe heterochromatin and euchromatin when viewed under an electron microscopearrow_forwardIn eukaryotic cells, the length of the transcribed RNA is almost equal to the corresponding DNA strand. True or false?arrow_forward
- Choose the CORRECT order of compaction of DNA in eukaryotes. DNA → nucleosome → loops → fiber → "beads on a string" → chromosome DNA → nucleosome → "beads on a string" → fiber → loops → chromosome DNA → nucleosome → fiber → loops → "beads on a string" → chromosome DNA → "beads on a string" → fiber → nucleosome → loops → chromosome DNA → fiber → loops → nucleosome → "beads on a string" → chromosomearrow_forwardDescribe the mechanisms by which bacterial DNA becomes compacted.arrow_forwardA major difference between prokaryotes and eukaryotes is the presence of a nucleus. What advantages and disadvantages may occur with having a cell’s genome packaged in a nucleus?arrow_forward
- Look 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_forwardForming nucleosomes and wrapping them into a 30-nm fiber provide part of the compaction of DNA in chromatin. If the fiber contains about six nucleosomes per 10 nm of length, what is the approximate compaction ratio achieved?arrow_forwardIn cells, proteins are synthesized from a gene sequence via the process of transcription and translation. Which of the following complementary base pairings would you observe during the synthesis (the making) of a prokaryotic protein? [I am looking for the complementary base pairing(s) you would see as you go from a gene to a protein. Note that it is prokarryotic protein and not eukaryotic protein]. DNA with mRNA mRNA with tRNA mRNA with rRNA rRNA with tRNA A. 1, 2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1, 2, 3 and 4 are correctarrow_forward
- There are two ways in which rearrangement of domain- encoding gene segments can result in novel protein functions. Which of the following is NOT included? Domain shuffling Domain duplication Domain replication Domain substitution Which of the following features are NOT shared by prokaryotic and eukaryotic cells? shared metabolic pathways similar mechanism for synthesizing and inserting membrane proteins plasma membrane of similar structure nucleosomes of similar constructionarrow_forwardConsidering prokaryotes, what term adds nucleotides in the 5' to 3' direction during DNA replication?arrow_forwardDescribe the structure of nucleosomes and the 30-nm fiber, andexplain how the 30-nm fiber forms radial loop domains.arrow_forward
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