Discussion
Home ‣ Biochemistry ‣ DNA Structure and Replication Comments
- Question
Klenow fragment without free nucleotides exhibits
Options- A. exonuclease activity
- B. endonuclease activity
- C. nickase activity
- D. no activity
- Correct Answer
- exonuclease activity
- 1. Enzyme, responsible for proofreading base pairing is
Options- A. DNA polymerase
- B. Telomerase
- C. Primase
- D. DNA ligase Discuss
- 2. 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
- 3. Which DNA polymerase removes RNA primers in DNA synthesis?
Options- A. Polymerase I
- B. Polymerase II
- C. Polymerase III
- D. none of these Discuss
- 4. 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
- 5. A cesium chloride will separate DNA molecules by
Options- A. absorption
- B. resorption
- C. density
- D. adhesion Discuss
- 6. In DNA, guanine pairs with
Options- A. Adenine
- B. Cytosine
- C. Thymine
- D. Uracil Discuss
- 7. The accepted hypothesis for DNA replication is
Options- A. conservative theory
- B. dispersive theory
- C. semi-conservative theory
- D. evolutionary theory Discuss
- 8. What is the approximate size (in kb) of the E. coli genome?
Options- A. 3000 kilobase
- B. 4500 kilobase
- C. 5500 kilobase
- D. 6500 kilobase Discuss
- 9. Which of the following would not contain DNA?
Options- A. Yeast
- B. Bacteria
- C. Glass crystals
- D. Mold Discuss
- 10. In sperm heads, DNA is particularly highly condensed and the histones are replaced with small basic protein called
Options- A. protamines
- B. purines
- C. pyrimidines
- D. all of the above Discuss
DNA Structure and Replication problems
Search Results
Correct Answer: DNA polymerase
Correct Answer: can be inhibited with antibiotics
Correct Answer: Polymerase I
Correct Answer: None of the above
Correct Answer: density
Correct Answer: Cytosine
Correct Answer: semi-conservative theory
Correct Answer: 4500 kilobase
Correct Answer: Glass crystals
Correct Answer: protamines
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