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TLS Online TPP Program

#Question id: 3762

Why does a new DNA strand elongate only in the 5' to 3' direction during DNA replication?

#Unit 3. Fundamental Processes

  1. DNA polymerase begins adding nucleotides at the 5' end of the template.

  2. The polarity of the DNA molecule prevents addition of nucleotides at the 3' end.

  3. Replication must progress toward the replication fork.

  4. DNA polymerase can add nucleotides only to the free 3' end.

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TLS Online TPP Program

#Question id: 9214

#Unit 9. Diversity of Life Forms

Researchers have been studying a rare population of 87 voles in an isolated area. Ten voles from a larger population were added to this isolated population. Besides having ten additional animals, what benefits are there to importing individuals?
TLS Online TPP Program

#Question id: 18001

#Unit 9. Diversity of Life Forms

Where in an angiosperm would you find a megasporangium? 

TLS Online TPP Program

#Question id: 10671

#Unit 10. Ecological Principles

The principle of competitive exclusion states that
TLS Online TPP Program

#Question id: 10404

#Unit 6. System Physiology – Plant

PIFs promote etiolated development in the dark phenomenon known as
TLS Online TPP Program

#Question id: 34096

#Unit 3. Fundamental Processes

A eukaryotic genome is divided into multiple replicons, and the origin in each replicon is activated once and only once in a single division cycle. It is due to