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TLS Online TPP Program

#Question id: 4346

Which of the following results would occur if the repressor of an inducible operon were mutated so that it could not bind the operator?

#Unit 3. Fundamental Processes

  1. the irreversible binding of the repressor to the promoter

  2. the reduced transcription of the operon's genes

  3. the continuous transcription of the operon's genes

  4. the overproduction of cAMP receptor protein (CRP)

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TLS Online TPP Program

#Question id: 12341

#Unit 10. Ecological Principles

The figure shows population growth trajectories over time (as indicated by the arrows) of two stored-grain beetle  species  when  grown  together  under  constant  conditions.  Three  experiments  were  performed  that  differed only in the initial densities of the two species. Which of the following is the best interpretation of the experimental results?
TLS Online TPP Program

#Question id: 2564

#Unit 2. Cellular Organization

A cell with a predominance of rough endoplasmic reticulum is most likely ________.
TLS Online TPP Program

#Question id: 240

#Unit 1. Molecules and their Interaction Relevant to Biology

Purines and pyrimidines exist in two tautomeric forms (lactam and lactim); nucleosides exist in two conformations (syn and anti). The most common forms found in cells are
TLS Online TPP Program

#Question id: 28786

#Unit 2. Cellular Organization

Which of the following toxin enhances the nucleation by binding and stabilizing actin dimers and lowering the Cc?
TLS Online TPP Program

#Question id: 3566

#Unit 8. Inheritance Biology

Two organisms, with genotypes BbDD and BBDd, are mated. Assuming independent assortment of the B/b and D/d genes, determine the genotypic ratios in offspring that would occur.