Which of the following statements correctly describes one difference between heterochromatin and euchromatin quizlet?
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Biology1st EditionKenneth R. Miller, Levine 2,591 solutions If a cell were unable to produce histone proteins, which of the following results would be a likely effect on the cell? a) The cell's DNA could not be packed into its nucleus. b) Amplification of other genes would compensate for the lack of histones. c) There would be an increase in the amount of DNA produced during replication. d) Spindle fibers would not form during prophase. a Which of the following statements correctly describes the structure of chromatin? a) Heterochromatin is composed of DNA, whereas euchromatin is made of DNA and RNA. b) Heterochromatin is highly condensed, whereas euchromatin is less compact. c) Both heterochromatin and euchromatin are found in the cytoplasm. d) Euchromatin is not transcribed, whereas heterochromatin is transcribed. b Which of the following structural characteristics is most critical for the association between histones and DNA? a) There are at least five different histone proteins in every eukaryote. b) Histones are highly conserved (that is, histones are very similar in every eukaryote). c) Histones are positively charged. d) Histones are small proteins. c Which of the following statements accurately describes the structure of a eukaryotic chromosome? a) It has different numbers of genes in different cell types of an organism. b) It is constructed as a series of nucleosomes wrapped around two DNA molecules. c) It is composed of a single strand of DNA. d) It is a single linear molecule of double-stranded DNA plus proteins. d Which of the following molecular characteristics cause histones to bind tightly to DNA? a) Histones are positively charged, and DNA is negatively charged. b) Histones are covalently linked to the DNA. c) Histones are negatively charged, and DNA is positively charged. d) Both histones and DNA are strongly hydrophobic. a Which of the following lists represents the order of increasingly higher levels of organization of
chromatin? b) looped domain, 30-nm chromatin fiber, nucleosome c) nucleosome, looped domain, 30-nm chromatin fiber d) 30-nm chromatin fiber, nucleosome, looped domain a What are chromosomes made of? e What is the difference between heterochromatin and euchromatin quizlet?What is the difference between euchromatin and heterochromatin? Euchromatin has regular cycles of condensation and decondensation between interphase and mitosis, whereas heterochromatin remains highly condensed throughout cycle (except for at replication).
How is euchromatin different from heterochromatin?Heterochromatin is highly condensed, gene-poor, and transcriptionally silent, whereas euchromatin is less condensed, gene-rich, and more easily transcribed (Huisinga et al. 2006). Nucleosome modifications distinguish heterochromatin from euchromatin.
In which one of the following is euchromatin and heterochromatin?Euchromatin is present in both prokaryotes and eukaryotes. Heterochromatin is present only in eukaryotes.
Which of the following statements correctly describes the difference between the leading and the lagging strands of DNA during DNA replication quizlet?Which of the following statements correctly describes the difference between the leading and the lagging strands of DNA during DNA replication? The leading strand is synthesized in the same direction as the movement of the replication fork, and the lagging strand is synthesized in the opposite direction.
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