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TLS Online TPP Program

#Question id: 1223

The receptors for steroid hormones are located inside the cell instead of the membrane surface like most other signal receptors. How do steroids gain access to their receptors?

#Unit 4. Cell Communication and Cell Signaling

  1. Steroid hormone receptors undergo conformational changes that relocate them on the membrane surface.

  2. Both steroid hormones and their receptors are produced by the same cells.

  3. Steroid hormones are lipid soluble, so they can readily diffuse through the lipid bilayer of the cell membrane.

  4. Steroid hormones first bind to a steroid activator and this complex is transported across the cell membrane by a steroid transport protein.

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TLS Online TPP Program

#Question id: 28073

#Unit 6. System Physiology – Plant

Which of the following is correct regarding ATP & NADPH synthesis and its physiological environment 
(a) ATP & NADPH is synthesized in Stroma
(b) ATP & NADPH is synthesized in Lumen
(c) STROMA is alkaline and similar to Mitochondrial matrix
(d) STROMA is acidic and similar to Mitochondrial matrix
Which of the following is correct
TLS Online TPP Program

#Question id: 28074

#Unit 6. System Physiology – Plant

P680 & P700 exist in various state, and each state have their own different properties 
(a) P680    -   absorbs light  
(b) P680+   -     strongest oxidant 
(c) P680 +   -     strongest reductant 
(d) P700   -    absorbs light 
(e) P700* -     strongest reductant 
Which of the following is correct 
TLS Online TPP Program

#Question id: 28075

#Unit 6. System Physiology – Plant

P680 & P700 exist in various state such as reductant, strongest reductant, oxidant and strongest oxidant 
 Match then correctly
TLS Online TPP Program

#Question id: 28076

#Unit 6. System Physiology – Plant

Choose the correct statement regarding Water splitting 
(a) Water splitting is oxidation reaction takes place in lumen
(b) Water splitting takes place at - reduction potential
(c) Water splitting takes place at + reduction potential
(d) NADPH+ formation is reduction reaction takes place in stroma
TLS Online TPP Program

#Question id: 28077

#Unit 6. System Physiology – Plant

The catalytic site for water oxidation in lumen is a
TLS Online TPP Program

#Question id: 28078

#Unit 6. System Physiology – Plant

Chlorophyll functions on the phenomenon of absorption of light and shows excitation of electron
(a) Chlorophyll absorbs blue or red light 
(b) blue light absorption resulting in a higher excited state 
(c) red light absorption resulting in a higher excited state 
(d) From IInd exited state returning ground state heat will be observed from blue and fluorescence from red light
Which of the following is incorrect