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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?

#XL - Q Biochemistry

  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: 4961

#XL - S Microbiology

An early consequence of the release of oxygen gas by plant and bacterial photosynthesis was to
TLS Online TPP Program

#Question id: 8936

#XL - S Microbiology

Organisms showing radial symmetry would likely
TLS Online TPP Program

#Question id: 3930

#XL - Q Biochemistry

Which is not part of the lac operon?
TLS Online TPP Program

#Question id: 29561

#XL - R Botany

Identify the type of aestivation found in Calotropis flowers.
TLS Online TPP Program

#Question id: 5086

#XL - T Zoology

Cells move to new positions as an embryo establishes its three germ tissue layers during ________.