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TLS Online TPP Program

#Question id: 3866

Which of the following statements about E. coli RNA polymerase (core enzyme) is false?

#Unit 3. Fundamental Processes

  1. In the absence of the B subunit, core polymerase has little specificity for where initiation begins.

  2. he core enzyme contains several different subunits.

  3. The core enzyme has no polymerizing activity until the  subunit is bound.

  4. The RNA chain grows in a 5' -> 3' direction.

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TLS Online TPP Program

#Question id: 19217

#Unit 12. Applied Biology

The T-DNA is transferred as which type of molecule from the Ti plasmid, enters the plant cell.
TLS Online TPP Program

#Question id: 7134

#Unit 5. Developmental Biology

What important lesson for the mechanisms of development can we derive from the ability to clone frogs by nuclear transfer?
TLS Online TPP Program

#Question id: 16122

#Unit 7. System Physiology – Animal

Fever is an abnormal elevation of body temperature. Following statements are regarding to the cellular mechanism of fever.
A. Pyrogens produce fever by increasing the hypothalamic set-point temperature.
B. the mechanism of pyrogen action is increased production of interleukin-1 (IL-1) in phagocytic cells.
C. IL-1 then acts on the anterior hypothalamus to increase local production of prostaglandins, which increase the set-point temperature.
D. IL-1 then acts on the posterior hypothalamus to increase local production of prostaglandins, which increase the set-point temperature.
E. IL-1 then acts on the posterior hypothalamus to increase local production of prostaglandins, which decrease the set-point temperature.
Which of the following combination is correct?
TLS Online TPP Program

#Question id: 266

#Unit 1. Molecules and their Interaction Relevant to Biology

________ plays an important role in storing the energy needed for the unwinding of DNA during replication, recombination, repair and transcription.
TLS Online TPP Program

#Question id: 19286

#Unit 9. Diversity of Life Forms

scale of ovulate (ovule-bearing) pinecone