TLS Online TPP Program

#Question id: 10344


Some of the following caracteristics of Nitrite reductase, which one of the is incorrect?

#Unit 6. System Physiology – Plant
  1. Nitrite is converted into ammonium by NADPH dependent nitrite reductase
  2. It contain two prosthetic groups: an iron–sulfur cluster (Fe4S4) and a specialized heme.
  3. Nitrite (NO2 – ) is a highly reactive, potentially toxic ion immediately transport from the cytosol into chloroplasts in leaves and plastids in roots
  4. Leaf chloroplasts and root plastids contain same type of the nitrite reductase
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TLS Online TPP Program

#Question id: 10454

#Unit 6. System Physiology – Plant

Arabidopsis mutants impaired in the chloroplast avoidance response with the help of PHOT1/PHOT2 led to the identification of a novel F-actin-binding protein known as

TLS Online TPP Program

#Question id: 10455

#Unit 6. System Physiology – Plant

Phototropins regulate chloroplast movements via_____

TLS Online TPP Program

#Question id: 10456

#Unit 6. System Physiology – Plant

Two identical subunits of UVR8 are linked in the dimer by a network of

TLS Online TPP Program

#Question id: 10457

#Unit 6. System Physiology – Plant

Cryptochromes are blue-light photoreceptors that mediate several blue-light responses, including__hypocotyl elongation, cotyledon expansion, petiole elongation, anthocyanin production and several other responses. Which of the following graph given below correct representing of blue light responses?

TLS Online TPP Program

#Question id: 10458

#Unit 6. System Physiology – Plant

Which of the following statements is not true for cry proteins?

TLS Online TPP Program

#Question id: 10459

#Unit 6. System Physiology – Plant

The role of N-terminus and the C-terminus region of the cryptochrome is given below;

a) N-terminal region is involved in the dimerization of cryptochrome and conformational changes

b) C terminus of cryptochrome forms a complex with SPA1 and COP1 that prevents them from acting, thereby preventing the degradation of HY5

c) N-terminal region of cryptochrome forms a complex with SPA1 and COP1 that prevents them from acting, thereby preventing the degradation of HY5

d) Arabidopsis plants overexpressing only the C-terminal region of cryptochrome (CCT) which resemble light-grown seedlings when grown in darkness

Which of the following combinations from the above statements is correct?