Write 12 Conceptual Multiple Choice Ouestions and Included Your Answer Kev for P
ID: 219571 • Letter: W
Question
Write 12 Conceptual Multiple Choice Ouestions and Included Your Answer Kev for Picture Below The Semi-Conservative Model of DNA Replication (a)The parent molecule (b) The first step in (c)Each parental strand now(d) The nucleotides are replication is separation of the two DNA strands. serves as a template that determines the order of nucleotides along a new connected to torm the strands of DNA. Each base is paired by hydrogen bonding with its specific partner backbones of the new strands. Each "daughter" DNA molecule consists of one parental strand and one new strand. with T and G with C.Explanation / Answer
1.A culture of E. coli growing in a medium containing 15NH4Cl is switched to a medium containg 14NH4Cl for 5 generations. The molecular ratio of hybrid DNA: light DNA will be
a.0.33 b.0.6 c.0.06 d.0.5
2. which of the following elements were used by Messelson and Stahl to prove semi-conservative replication?
a.Nitrogen b. Carbon c. Sulphur d. Phosphorous
3. which of the following technique was used to establish semi-conservative mode of replication?
a.Autoradiography b. Electrophoresis c. Cesium-chloride density gradient centrifugation d. chromatography
4. by convention, the sequence of nucleic acids is usually expressed in the following direction.
5. DNA replication occurs in what direction?
a.5’ to 3’ b. 3’ to 5’ c. any direction d. 5’ to 2’
6. which of the true regarding semi-conservative mode of DNA replication
a.both the strands of daughter DNA molecule are synthesized newly
b. one of the strands of daughter DNA molecule are synthesized newly
c. both the strands of daughter DNA molecule contain half parental strand and half newly synthesized
d. none of the above
7. according to chargaff’s rule, the following proportion exists in DNA
a.A=T b. A>T c. A<T d. A=G
8. which of the following is not required for replication?
a.polymerase b. helicase c. SSBP d. mutase
9. DNA replication occurs in
a. cytosol b. nucleus c. ribosome d. golgi
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