Discussion
Home ‣ Biochemistry ‣ DNA Structure and Replication Comments
- Question
DNA helicase is used to
Options- A. unwind the double helix
- B. interact the double helix closely
- C. break a phosphodiester bond in DNA strand
- D. none of the above
- Correct Answer
- unwind the double helix
- 1. Telomeres are usually rich in which nucleotide?
Options- A. Adenine
- B. Guanine
- C. Thymine
- D. Cytosine Discuss
- 2. When DNA polymerase is in contact with guanine in the parental strand, what does it add to the growing daughter strand?
Options- A. Phosphate
- B. Cytosine
- C. Uracil
- D. Guanine Discuss
- 3. Proteins involved in opening a replication bubble are
Options- A. DNA helicases
- B. single stranded binding proteins
- C. ligase
- D. DNA topoisomerase Discuss
- 4. The chromosomal DNA complexes with
Options- A. three types of histone as H1, H2A and H4
- B. five types of histone as H1, H2A, H2B, H3 and H4
- C. four types of histone as H1, H2A, H3 and H4
- D. two types of histone as H1 and H4 Discuss
- 5. In DNA double helix, the two DNA chains are held together by
Options- A. covalent bonds between the pair of bases
- B. hydrogen bonds between the pair of bases
- C. ionic bonds between the pair of bases
- D. none of the above Discuss
- 6. DNAs when charged, migrate in a gel towards the
Options- A. positive pole
- B. negative pole
- C. will not migrate
- D. none of these Discuss
- 7. The most common liquid volumes in molecular biology are measured in
Options- A. ml
- B. ?l
- C. nl
- D. 1 Discuss
- 8. In DNA, there are
Options- A. five bases known as adenine, guanine, thymine, tryptophan and cytosine
- B. four bases known as adenine, guanine, thymine and cytosine
- C. three bases known as adenine, guanine and cytosine
- D. only two bases known as adenine and cytosine Discuss
- 9. If one cell has AT contents 40%, what will be the percentage of Guanine residue?
Options- A. 60%
- B. 15%
- C. 30%
- D. Guanine residue can not be calculated Discuss
- 10. The overall conclusion of the Hershey-Chase experiment was that
Options- A. DNA was responsible for heredity
- B. proteins and DNA were responsible for heredity
- C. the ratio of Adenine to thymine was always the same
- D. phage DNA was similar to bacterial DNA Discuss
DNA Structure and Replication problems
Search Results
Correct Answer: Guanine
Correct Answer: Cytosine
Correct Answer: DNA topoisomerase
Correct Answer: five types of histone as H1, H2A, H2B, H3 and H4
Correct Answer: hydrogen bonds between the pair of bases
Correct Answer: positive pole
Correct Answer: ?l
Correct Answer: four bases known as adenine, guanine, thymine and cytosine
Correct Answer: 30%
Correct Answer: DNA was responsible for heredity
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