The function of light is to excite a specialized chlorophyll in the reaction centre either by Direct absorption or more frequently, via energy transfer from an antenna pigment, This excitation process can be envisioned as

a.) An electron from the lowest-energy filled orbital of the chlorophyll to the highest-energy unfilled orbital

b.) An electron in the upper orbital is only tightly bound to the chlorophyll and is difficult to fetch the electron nearby molecules

c.)  The electron in the upper orbital is only loosely bound to the chlorophyll and is easily lost if a molecule that can accept the electron is nearby

d.) The promotion of an electron from the highest-energy filled orbital of the chlorophyll to the lowest-energy unfilled orbital

Which combination is CORRECT?

#Question id: 845

#Unit 1. Molecules and their Interaction Relevant to Biology

The most common cystic fibrosis– causing mutation is the deletion of a Phe residue at position____ in CFTR, which causes improper protein folding

#Question id: 846

#Unit 1. Molecules and their Interaction Relevant to Biology

The maintenance of the steady-state collection of active cellular proteins required under a particular set of conditions, called ______.

#Question id: 847

#Unit 1. Molecules and their Interaction Relevant to Biology

A proposed pathway for the action of E.coli chaperonins  are groEL and groES.groEL exist in trans and cis structure transferring with its bound ATP now become the cis ring once the groES  bound to it ATP hydrolysis takes place and improperly folded protein get properly folded, total number of  ATP molecules are required to per folding cycle;

#Question id: 848

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the brain diseases is not caused by the misfolding of brain proteins in mammals

#Question id: 849

#Unit 1. Molecules and their Interaction Relevant to Biology

The rigidity of the peptide unit and the restricted set of allowed phi and psi angles limits the number of structures accessible to the unfolded form sufficiently to allow:-

#Question id: 850

#Unit 1. Molecules and their Interaction Relevant to Biology

The experimental inverse of protein structure prediction, has provided insights into protein folding and stability. Protein design attempts to construct an amino acid sequence that will form a structure such as a sandwich of β sheets or a bundle of α helices;