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TLS Online TPP Program

#Question id: 3913

The sigma-70 subunit

#XL - Q Biochemistry

  1. increases the affinity of the core polymerase for nonpromoter sequences.

  2. decreases the affinity of the core polymerase for specific promoter sequences.

  3. is responsible for transcribing many genes.

  4. is associated with a holoenzyme, enabling the formation of more stable complexes.

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TLS Online TPP Program

#Question id: 425

#XL - R Botany

Which is usually the slowest way to regulate a reaction in a metabolic pathway?
TLS Online TPP Program

#Question id: 165

#XL - T Zoology

Amino acids are ampholytes because they can function as either a(n):
TLS Online TPP Program

#Question id: 11505

#XL - S Microbiology

An individual mixotroph loses its plastids, yet continues to survive. Which of the following most likely accounts for its continued survival?
TLS Online TPP Program

#Question id: 10820

#XL - T Zoology

Of the following types of interactions, which one is least likely to limit population size?
TLS Online TPP Program

#Question id: 3470

#XL - T Zoology

The alleles that cause uncles to care for nephews will spread, when cost value is 30, according to Hamilton’s Rule altruistic only only if the fitness benefit is