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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?

#SCPH01 Biochemistry

  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: 12927

#SCPH01 Biochemistry

When the ends cut by enzyme are not only identical but complementary and will base pair with each other they are therefore known as _______
TLS Online TPP Program

#Question id: 1048

#SCPH28 | Zoology

A virion is composed of
TLS Online TPP Program

#Question id: 4593

#SCPH06 I Botany

Which of Darwin's ideas had the strongest connection to his reading of Malthus's essay on human population growth?
TLS Online TPP Program

#Question id: 10385

#SCPH06 I Botany

The leaves of many species are able to bend toward the sun during its progress across the sky, a phenomenon known as
TLS Online TPP Program

#Question id: 1547

#SCPH06 I Botany

follicular dendritic cells (FDCs) secrete CXCL13 and its receptor, CXCR5, which is expressed on B cells, function of this interaction ?