Discussion
Home ‣ Biochemistry ‣ DNA Structure and Replication Comments
- Question
A cesium chloride will separate DNA molecules by
Options- A. absorption
- B. resorption
- C. density
- D. adhesion
- Correct Answer
- density
- 1. 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
- 2. 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
- 3. 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
- 4. The most common liquid volumes in molecular biology are measured in
Options- A. ml
- B. ?l
- C. nl
- D. 1 Discuss
- 5. 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
- 6. Which of the following is incorrect?
Options- A. In DNA double helix, two strands of the DNA are bound with each other with the bases
- B. Adenine always pairs with thymine
- C. Guanine always pairs with the cytosine
- D. None of the above Discuss
- 7. Which DNA polymerase removes RNA primers in DNA synthesis?
Options- A. Polymerase I
- B. Polymerase II
- C. Polymerase III
- D. none of these Discuss
- 8. DNA gyrase in E. coli
Options- A. adds positive supercoils to chromosomal DNA
- B. can be inhibited with antibiotics
- C. is required only at the oriC site
- D. performs the same function as helicase in eukaryotes Discuss
- 9. Enzyme, responsible for proofreading base pairing is
Options- A. DNA polymerase
- B. Telomerase
- C. Primase
- D. DNA ligase Discuss
- 10. Klenow fragment without free nucleotides exhibits
Options- A. exonuclease activity
- B. endonuclease activity
- C. nickase activity
- D. no activity Discuss
DNA Structure and Replication problems
Search Results
Correct Answer: DNA was responsible for heredity
Correct Answer: 30%
Correct Answer: four bases known as adenine, guanine, thymine and cytosine
Correct Answer: ?l
Correct Answer: positive pole
Correct Answer: None of the above
Correct Answer: Polymerase I
Correct Answer: can be inhibited with antibiotics
Correct Answer: DNA polymerase
Correct Answer: exonuclease activity
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