TLS Online TPP Program

#Question id: 2015


Some viruses can undergo latency, the ability to remain inactive for some period of time. Which of the following is an example?

#Section 2: General Biology
  1. influenza, a particular strain of which returns every 10-20 years

  2. herpes simplex viruses (oral or genital) whose reproduction is triggered by physiological or emotional stress in the host

  3. Kaposiʹs sarcoma, which causes a skin cancer in people with AIDS, but rarely in those not infected by HIV

  4. the virus that causes a form of the common cold, which recurs in patients many times in their lives

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TLS Online TPP Program

#Question id: 3687

#Section 3: Genetics, Cellular and Molecular Biology

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

#Section 3: Genetics, Cellular and Molecular Biology

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

#Section 3: Genetics, Cellular and Molecular Biology

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

TLS Online TPP Program

#Question id: 3690

#Section 3: Genetics, Cellular and Molecular Biology

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?

TLS Online TPP Program

#Question id: 3691

#Section 3: Genetics, Cellular and Molecular Biology

 DNA polymerase III holoenzyme possesses:

TLS Online TPP Program

#Question id: 3692

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following statement is true regarding an enzyme DNA polymerase that catalyzes the elongation of complementary DNA strand?