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TLS Online TPP Program

#Question id: 5760

The fluctuation test of Luria and Delbruck (studying resistance to bacteriophge T1 infection) established that

#Unit 8. Inheritance Biology

  1. T1 phage was a mutagen.

  2. Mutations could arise prior to the time they were selected

  3. The mutation rate varies greatly from experiment to experiment.

  4. In E. coli the number of mutants per clone was relatively constant.

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TLS Online TPP Program

#Question id: 10764

#Unit 8. Inheritance Biology

Dihybrid cross conclude
TLS Online TPP Program

#Question id: 4385

#Unit 3. Fundamental Processes

The nuclear-receptor superfamily consists of several proteins that bind to consensus sequences of DNA response elements. Which of the following is NOT considered a member of this superfamily?
TLS Online TPP Program

#Question id: 16100

#Unit 7. System Physiology – Animal

Heat-loss mechanism:
TLS Online TPP Program

#Question id: 566

#Unit 1. Molecules and their Interaction Relevant to Biology

The role of the metal ion (Mg2+) in catalysis by enolase is to
TLS Online TPP Program

#Question id: 24165

#Unit 1. Molecules and their Interaction Relevant to Biology

When winding an old clock, it is important not to overwind it. Overwinding occurs when the mainspring is almost fully wound, but the operator continues to turn the winding key. This causes the main spring to coil too tightly, and might even break it.

This paragraph best supports the statement that