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TLS Online TPP Program

#Question id: 34533

Which of the following statements differentiate positive and negative chemotaxis?

#XL - S Microbiology
  1. In positive chemotaxis, CheY remains phosphorylated for longer durations
  2. In negative chemotaxis, the bacterium increases tumbling to change direction
  3. Attractants suppress CheA activity, while repellents activate it
  4. Only positive chemotaxis involves methylation of MCPs
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TLS Online TPP Program

#Question id: 20159

#XL - P Chemistry

The ground state configuration of Fe3+ ion in gaseous state is: (At. No. of Fe = 26)
TLS Online TPP Program

#Question id: 20160

#XL - P Chemistry

If uncertainty in the position of electron is zero, the uncertainty in its momentum would be
TLS Online TPP Program

#Question id: 20161

#XL - P Chemistry

The radius of second Bohr’s orbit is
TLS Online TPP Program

#Question id: 20162

#XL - P Chemistry

For which of the following sets of quantum -numbers an electron will have the highest energy ?
TLS Online TPP Program

#Question id: 20163

#XL - P Chemistry

The uncertainty in the position of an electron (mass 9.1 × 10–28 g) moving with a velocity of 3.0 x 104 cms–1 accurate up to 0.011% will be
TLS Online TPP Program

#Question id: 20164

#XL - P Chemistry

The radius of hydrogen atom in the ground state is 0·53 Å, the radius of 3Li2+ in the similar state is