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TLS Online TPP Program

#Question id: 5211

Why might the cricket genome have 11 times as many base pairs than that of Drosophila melanogaster?

#Unit 11. Evolution and Behavior

  1. The two insect species evolved at very different geologic eras.

  2. Crickets have higher gene density.

  3. Drosophila are more complex organisms.

  4. Crickets must have more non-coding DNA.

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TLS Online TPP Program

#Question id: 3983

#Unit 3. Fundamental Processes

Transcription of the lactose operon in E. coli is stimulated by:
TLS Online TPP Program

#Question id: 3984

#Unit 3. Fundamental Processes

Which of the following statements about regulation of the lac operon is true?
TLS Online TPP Program

#Question id: 3985

#Unit 3. Fundamental Processes

The binding of CRP (cAMP receptor protein of E. coli) to DNA in the lac operon:
TLS Online TPP Program

#Question id: 3986

#Unit 3. Fundamental Processes

Consider the lac operon of E. coli.  When there is neither glucose nor lactose in the growth medium:
TLS Online TPP Program

#Question id: 3987

#Unit 3. Fundamental Processes

A regulon is a(n):
TLS Online TPP Program

#Question id: 3988

#Unit 3. Fundamental Processes

The tryptophan operon of E. coli is repressed by tryptophan added to the growth medium.  The tryptophan repressor probably: