Question 1 One cellular advantage of packaging DNA into chromatin is that this allows the cell to fit the large amount of DNA into the tight nuclear space. 3 pts O True O False
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Step 1: Chromatin is a complex of DNA and proteins that forms the chromosomes within the nucleus of eukaryotic cells. Show more…
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Histone protein H1 acts as clamp to hold DNA onto the histone core: True False DNA replication and transcription can occur in the 11nm fiber but not the 30 nm fiber: True False DNA is present in the form of uncondensed chromatin during interphase True False
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If all the chromosomes in the nucleus of a single eukaryotic somatic cell were stretched out in a line, the length of the DNA would be about 3 m. The diameter of the nucleus of a eukaryotic cell, however, is only about 5 um. Which of the following statements about DNA "packaging" is true? The DNA is wrapped around histones in structures called nucleosomes to form a 10 nm fiber. The nucleosomes fold into coils called 30 nm fiber The 30 nm fibers coil into long looped-domains held together by scaffold proteins with a diameter of about 300 nm The looped-domains fold into chromosomes. All of the above are true Which of the following cellular processes is not used to regulate expression of genetic information in eukaryotic cells? Arrangement of genes in operons Chromatin remodeling Transcription initiation RNA stability and RNA splicing Post-translational modification
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