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TLS Online TPP Program

#Question id: 12540

Which of the following statements is true?

#Unit 10. Ecological Principles
  1. An ecosystem's trophic structure determines the rate at which energy cycles within the system. 
  2. At any point in time, it is impossible for consumers to outnumber producers in an ecosystem. 
  3. Chemoautotrophic prokaryotes near deep-sea vents are primary producers.
  4. There has been a well-documented increase in atmospheric nitrogen over the past several decades.
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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?