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TLS Online TPP Program

#Question id: 2673

For a repressible operon to be transcribed, which of the following must be true?

#SCPH05 I Biotechnology

  1. A corepressor must be present.

  2. RNA polymerase must bind to the promoter, and the repressor must be inactive.

  3. RNA polymerase and the active repressor must be present.

  4. RNA polymerase cannot be present, and the repressor must be inactive.

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TLS Online TPP Program

#Question id: 103

#SCPH05 I Biotechnology

Lipids may be either hydrophobic or ________.
TLS Online TPP Program

#Question id: 11664

#SCPH28 | Zoology

Why are the renal artery and vein critical to the process of osmoregulation in vertebrates?
TLS Online TPP Program

#Question id: 10394

#SCPH06 I Botany

The interconversion of phytochrome Pr to Pfr form proposed by
TLS Online TPP Program

#Question id: 331

#SCPH06 I Botany

A positive and a negative charge are initially 4 cm apart. When they are moved closer together so that they are now only 1 cm apart, the force between them will be
TLS Online TPP Program

#Question id: 7696

#SCPH28 | Zoology

The following question refers to the following phylogenetic trees. Which tree depicts the microsporidians as a sister group of the ascomycetes?