If the culture is kept in stationary phase for a prolonged period, the cells may die. Why?

a) due to the time taken for doubling of cell number

b) duration of a cell generation is too large, depending mainly on the plant species.

c) stationary phase is forced on the culture by a depletion of the nutrients

d) due to an accumulation of cellular wastes

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 Cytc_ox

TLS Online TPP Program

#Question id: 27978

#Unit 1. Molecules and their Interaction Relevant to Biology

Alternative oxidase are characteristically found in plant responsible for the

TLS Online TPP Program

#Question id: 27979

#Unit 1. Molecules and their Interaction Relevant to Biology

In the Alternative respiratory pathway 

a. the external NADH dehydrogenase is rotenone insensitive 

b. the external NADH dehydrogenase is cyanide-resistant

c. alternative oxidase is cyanide-resistant 

d. alternative oxidase is rotenone insensitive