Practice Questions

TLS Online TPP Program

#Question id: 9588

The light-absorbing antenna systems are organised in different manner, which of the following statements about antenna would be Incorrect?

#Unit 6. System Physiology – Plant

The antenna systems of different classes of photosynthetic organisms are almost same , in contrast to the reaction centre, which appear to be similar in even distantly related organisms
The variety of antenna complexes reflects evolutionary adaptation to the diverse environments in which different organisms live, as well as the need in some organisms to balance energy input to the two photosystems
The size of the antenna system varies considerably in different organisms, ranging from a low of 20 to 30 bacteriochlorophylls per reaction centre to generally 200 to 300 chlorophylls per reaction centre
The molecular structures of antenna pigments are associated in some way with the photosynthetic membrane, In almost all cases, the antenna pigments are associated with proteins to form pigment–protein complexes

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TLS Online TPP Program

#Question id: 27417

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct composition of mammalian or eukaryotic plasma membrane

Note = OML = outer mono layer, IML = inner mono layer

TLS Online TPP Program

#Question id: 27418

#Unit 1. Molecules and their Interaction Relevant to Biology

Inner monolayer of trans Golgi network is made up of

TLS Online TPP Program

#Question id: 27419

#Unit 1. Molecules and their Interaction Relevant to Biology

The distribution of lipids in the membranes of a typical cell Each membrane has its own characteristic composition, and the two monolayers of a given membrane may differ in composition hence choose which of the following is incorrect

Note = OML = outer mono layer, IML = inner mono layer

TLS Online TPP Program

#Question id: 27420

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following membrane do not have cholesterol

1.Plasma membrane (E. coli)

2.Outer mitochondrial membrane (cauliflower)

3.Inner mitochondrial membrane (cauliflower)

4.Chloroplast inner membrane

TLS Online TPP Program

#Question id: 27421

#Unit 1. Molecules and their Interaction Relevant to Biology

Highest concentration of cholesterol are found in

TLS Online TPP Program

#Question id: 27422

#Unit 1. Molecules and their Interaction Relevant to Biology

There are two extreme states of bilayer lipids choose which of the following is correct

1.In the liquid- ordered (Lo) state, polar head groups are non uniformly arrayed at the surface, and the acyl chains are nearly motionless and packed with irregular

2.in the liquid- ordered (Lo) state, polar head groups are uniformly arrayed at the surface, and the acyl chains are nearly motionless and packed with regular

3.In the liquid-disordered (Ld) state acyl chains undergo much thermal motion and have regular organization.

4.In the liquid-disordered (Ld) state, acyl chains undergo much thermal motion and have no regular organization.