TLS Online TPP Program

#Question id: 3833


Regarding DNA replication, which, if any, of the following statements is incorrect?

#Unit 3. Fundamental Processes
  1. DNA replication is said to be semi-conservative because for each DNA helix only one strand serves as a template for new DNA synthesis.

  2. The two DNA strands of the parental DNA helix are unwound using a DNA helicase.

  3. The replication fork marks the point at which DNA is actively being replicated from a single DNA duplex to form new DNA strands.

  4. The synthesis of new DNA strands always proceeds in the 5’ → 3’ direction.

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TLS Online TPP Program

#Question id: 3685

#Unit 3. Fundamental Processes

In prokaryotes, DNA replication begins at a single site that is rich in AT nucleotide sequence, where two strands unwind and separate. This ATP dependent process catalyzed by a protein

TLS Online TPP Program

#Question id: 3686

#Unit 3. Fundamental Processes

The short strand of ........ primer is required for the replication of DNA:

TLS Online TPP Program

#Question id: 3687

#Unit 3. Fundamental Processes

As the two strands of the double helix are separated, the positive supercoiling interferes with the further unwinding of DNA. Which of the following enzyme makes a break in a strand of DNA to release the supercoiling and facilitate the replication to occur?

TLS Online TPP Program

#Question id: 3688

#Unit 3. Fundamental Processes

Which of the following enzyme has a unique ability to introduce positive and negative supercoiling of the DNA and it is the target for antibacterial agents such as ciprofloxacin/quinolones?

TLS Online TPP Program

#Question id: 3689

#Unit 3. Fundamental Processes

DNA replication is bidirectional and anti-parallel. Which of the statement is FALSE regarding the DNA replication?

TLS Online TPP Program

#Question id: 3690

#Unit 3. Fundamental Processes

The DNA polymerase is a template-directed enzyme that synthesizes new complementary strand from a parent strand but it requires the existing short nucleotide sequence for its elongation. Which of the following enzyme is required for the synthesis of this primer?