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Molecular Biology Practice Test: Genomes and DNA
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Genomes and DNA topics include: Genome organization, eukaryotic dna features, palindromes, inverted repeats and stem and loop structures, dna fragments separation by electrophoresis, dna helical structures, dna topology, chromatin centromere and telomere. A genome is an organism's complete set of DNA instructions. It contains all the information needed for an individual to develop and function.  The genome is made up of DNA, a long two-stranded chemical polymer. Each DNA strand is made up of four different units, called nucleotides, that are linked end to end to form a long chain.  Most... Show more
Molecular Biology Practice Test: Genomes and DNA
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25 Questions

1. Which of the following is not true about positive supercoils?
2. Which of the following is not a property of topoisomerase?
3. How many types of histone molecules are found in nature?
4. Pulse field gel electrophoresis separates DNA molecules of size ___________
5. In the beads on a string model, the bead is made up of __________
6. In the Z form of DNA the fundamental repeating unit is __________
7. Plectonomic writhe is __________
8. Which special enzyme introduces negative supercoils in DNA?
9. Which of the following enzymes is not correctly paired with its function?
10. To reseal the DNA backbone where does topoisomerase gets the energy from?
11. Which of the following is not a characteristic of the nuclear scaffold?
12. The polymerization of the gel used in PAGE occurs between polyacrylamide and ____________
13. What is the condition required to observe A form of DNA?
14. With respect to remodeling complex of nucleosome, which of the following is not true?
15. What is ΔLk and Lk0 dependent upon?
16. With respect to assembly of every core histone which of the following is wrong?
17. Linking number is the sum of which geometric components?
18. Double-stranded structure of nucleic acid is the basic requirement for palindromic sequences.
19. Linking number is always a ___________
20. Which of the following is not a character of unique Intergenic DNA?
21. Which of the following histone pairs forms tetramers in solution?
22. In higher salt concentration the DNA helix assumes the right-handed conformation.
23. Which of the following is not a character of A DNA?
24. Which of the following does not contain a stem-loop structure?
25. Topoisomerases introduces catenation to promote cell division.