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TLS Online TPP Program

#Question id: 3865

Which of the following statements about E. coli RNA polymerase is false?

#Unit 3. Fundamental Processes

  1. Core enzyme selectively binds promoter regions, but cannot initiate synthesis without a sigma factor.

  2. RNA polymerase holoenzyme has several subunits.

  3. RNA produced by this enzyme will be completely complementary to the DNA template.

  4. The enzyme adds nucleotides to the 3' end of the growing RNA chain.

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TLS Online TPP Program

#Question id: 10193

#Unit 6. System Physiology – Plant

Leaf orientation is controlled by a specialized organ that contains motor cells that change their osmotic potential and generate mechanical forces that determine laminar orientation, that specialized organ is known as
TLS Online TPP Program

#Question id: 2331

#Unit 2. Cellular Organization

Which portion of a phospholipid molecule would be facing the environment outside of the cell?
TLS Online TPP Program

#Question id: 4636

#Unit 11. Evolution and Behavior

Given a population that contains genetic variation, what is the correct sequence of the following events, under the influence of natural selection?

1. Well-adapted individuals leave more offspring than do poorly adapted individuals.

2. A change occurs in the environment.

3. Genetic frequencies within the population change.

4. Poorly adapted individuals have decreased survivorship.
TLS Online TPP Program

#Question id: 4139

#Unit 3. Fundamental Processes

Which one of the following statements about the elongation phase of protein synthesis is true?
TLS Online TPP Program

#Question id: 23070

#Unit 12. Applied Biology

The bioremediation techniques which are involve the mixing of contaminated water and soil,  fertilizers and carbon dioxide in a bioreactor to stimulate biodegradation