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TLS Online TPP Program

#Question id: 3672

During initiation of replication

#3. Fundamental Processes

  1. DNA polymerases denature A-T rich sequences at the origin.

  2. replication begins when DnaA protein binds the origin and synthesizes primers.

  3. DnaB protein cleaves the double-helix to produce template strands.

  4. two replication forks need to be created to establish bidirectional replication.

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TLS Online TPP Program

#Question id: 12372

#10. Ecological Principles

In a particular case of secondary succession, three species of wild grass all invaded a field. By the second season, a  single species dominated the field. A possible factor in this secondary succession was
TLS Online TPP Program

#Question id: 4957

#11. Evolution and Behavior

How many half-lives should have elapsed if 6.25% of the parent isotope remains in a fossil at the time of analysis?
TLS Online TPP Program

#Question id: 377

#1. Molecules and their Interaction Relevant to Biology

The aqueous solution with the highest pH is:
TLS Online TPP Program

#Question id: 947

#1. Molecules and their Interaction Relevant to Biology

 Which is not part of the synthesis reactions for histidine?
TLS Online TPP Program

#Question id: 19365

#13. Methods in Biology

Which vectors carry the longest foreign DNA fragments?