TLS Online TPP Program

#Question id: 9584


In given Relationship of oxygen production to flash energy, the first evidence for the interaction between the antenna pigments and the reaction centre, What conclusion can be drawn about based on graph;


a.) several hundred pigments are associated with each reaction centre and that each reaction centre must operate four times to produce 1 molecule of oxygen—hence the value of 2500 chlorophylls per O2

b.) low light intensity of the curve, an increase in the number of photons stimulates a proportional increase in oxygen evolution. Thus, the slope of the curve measures the quantum yield for oxygen production

c.) The quantum yield for a particular process can range from 0 →if that process does not respond to light to 1.0→if every photon absorbed contributes to the process by forming a product

d.) O2 require more than a single photochemical event to be formed, and therefore have a lower quantum yield of formation than the photochemical quantum yield. It takes about ten photons to produce one molecule of O2, so the quantum yield of O2 production is about 0.1

Which of the following statements would be correct relates with graph?

#Unit 6. System Physiology – Plant
  1. A, B and D           
  2. B, C and D
  3. A and C         
  4. A, B, C and D
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TLS Online TPP Program

#Question id: 27972

#Unit 1. Molecules and their Interaction Relevant to Biology

This is the order of electron transfer in complex-I NADH - FMN - Fe-S – Q to Prevent electron transfer from Fe-S center to ubiquinone 

a. Myxothiazol

b. Rotenone

c. Amytal

d. Piericidin A

Which of the following can be used

TLS Online TPP Program

#Question id: 27973

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is responsible to Blocks electron transfer with in complex III from cytochrome b to cytochrome c

TLS Online TPP Program

#Question id: 27974

#Unit 1. Molecules and their Interaction Relevant to Biology

During the reduction of C in Q cycle four proton transported from matrix to IMS in which

TLS Online TPP Program

#Question id: 27975

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following set of condition During Q cycle, will favours the formation of ROS generation
(a) mitochondria are not making ATP and therefore have a large proton-motive force and a high ratio of QH2/Q
(b) mitochondria are making ATP and therefore have a large proton-motive force and a high ratio of Q/QH2 
(c) there is a high NAD/NADH ratio in the matrix
(d) there is a high NADH/NAD ratio in the matrix

TLS Online TPP Program

#Question id: 27976

#Unit 1. Molecules and their Interaction Relevant to Biology

Ubiquinone (Q) is the point of entry from 4 major entry points
a. NADH
b. Succinate (MM)
c. Glycerol 3-phosphate dehydrogenase (Cytosol)
d. Acyl-CoA dehydrogenase

TLS Online TPP Program

#Question id: 27977

#Unit 1. Molecules and their Interaction Relevant to Biology

Respiratory complexes tightly associate with each other in the inner membrane to form respirasomes 
a. I, II, III by Cytcox
b. III-IV by UQH2 ⇌ UQ 
c. I, II, III by UQH2 ⇌ UQ 
d. III-IV by Cytcox