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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?

#SCPH06 I Botany

  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: 1082

#SCPH01 Biochemistry

Which of the following is a type of signaling in which a cells respond to substrate that they themselves release ?
TLS Online TPP Program

#Question id: 1294

#SCPH06 I Botany

Dystroglycan is a large glycoprotein that binds to dystrophin in muscle cells.  It is also present in other cells and can also bind to:

a.  laminin.

b.  the virus that causes Lassa fever.

c.  the bacterium that causes leprosy.
TLS Online TPP Program

#Question id: 3926

#SCPH28 | Zoology

Positive regulation of a gene requires __.
TLS Online TPP Program

#Question id: 14700

#SCPH06 I Botany

One mapping is selected at random from all the mappings from the set S = {1,2,3,...n} into itself. The probability that the selected mapping is one to one is
TLS Online TPP Program

#Question id: 16096

#I Life Science/ Life Sciences Group – I-V

heat stroke is characteristically associated with