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Questions and Answers
What is the approximate length of DNA double helix in a typical mammalian cell?
What is the approximate length of DNA double helix in a typical mammalian cell?
- 2.2 metres (correct)
- 6.6 × 10^9 bp
- 0.34 nm
- 10–6 m
What are the positively charged, basic proteins responsible for organizing DNA in eukaryotes?
What are the positively charged, basic proteins responsible for organizing DNA in eukaryotes?
- Lysine and arginine
- Microtubules
- Histones (correct)
- Proteins with negative charges
How is DNA packaged in a prokaryotic cell like E. coli?
How is DNA packaged in a prokaryotic cell like E. coli?
- Scattered throughout the cell
- Organized in large loops held by proteins in a region termed as 'nucleoid' (correct)
- Wrapped around microtubules
- Bound to histone octamers
What is the charge of the amino acid residues lysine and arginine in histones?
What is the charge of the amino acid residues lysine and arginine in histones?
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How can the number of base pairs in E. coli DNA be calculated if the length of E. coli DNA is 1.36 mm?
How can the number of base pairs in E. coli DNA be calculated if the length of E. coli DNA is 1.36 mm?
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