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TLS Online TPP Program

#Question id: 3869

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

#Unit 3. Fundamental Processes

  1. It can start new chains de novo or elongate old ones.

  2. It has no catalytic activity unless the sigma factor is bound.

  3. It uses nucleoside 5'-triphosphates as substrates.

  4. Its activity is blocked by rifampicin.

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TLS Online TPP Program

#Question id: 433

#Unit 1. Molecules and their Interaction Relevant to Biology

Fatty acid synthesis occurs in the ________, while fatty acid breakdown occurs in the
TLS Online TPP Program

#Question id: 434

#Unit 1. Molecules and their Interaction Relevant to Biology

 Anabolic and catabolic reactions in eukaryotes can occur simultaneously in cells. This is possible because ________.
TLS Online TPP Program

#Question id: 435

#Unit 1. Molecules and their Interaction Relevant to Biology

What defines a near-equilibrium reaction?
TLS Online TPP Program

#Question id: 436

#Unit 1. Molecules and their Interaction Relevant to Biology

A chemical reaction with a negative enthalpy change and a negative entropy change
TLS Online TPP Program

#Question id: 544

#Unit 1. Molecules and their Interaction Relevant to Biology

One of the enzymes involved in glycolysis, aldolase, requires Zn2+ for catalysis. Under conditions of zinc deficiency, when the enzyme may lack zinc, it would be referred to as the:
TLS Online TPP Program

#Question id: 545

#Unit 1. Molecules and their Interaction Relevant to Biology

Which one of the following is not among the six internationally accepted classes of enzymes?