If relatively small carbonaceous chondrites from space were a significant source of Earthʹs original amino acids, then which two of these would have been most important in permitting their organic materials to survive impact with Earth?

I. Carbonaceous chondrites must contain no D-amino acids.

II. Earthʹs early atmosphere must have had little free oxygen.

III. The chondrites must have arrived on Earth before 4.2 billion years ago.

IV. Earthʹs early atmosphere must have been dense enough to dramatically slow the chondrites before they impacted.

V. The chondrites must have impacted land, rather than a large body of water.

#Question id: 649

#Unit 1. Structure and Function of Biomolecules

Choose INCORRECT statement from the following

#Question id: 650

#Unit 1. Structure and Function of Biomolecules

On the basis of hypothetical binding curve given below, which of the following statement is INCORRECT

#Question id: 651

#Unit 1. Structure and Function of Biomolecules

Consider an enzyme catalysed reaction treated with inhibitor. Enzyme kinetic was analysed with Eadie Hofstee equation. A plot of V0 versus V0/[S] for an enzyme-catalyzed reaction is shown below. The control curve was obtained in the absence of inhibitor. Which effect is shown on the enzyme activity when an inhibitor is added to the reaction mixture?

#Question id: 652

#Unit 1. Structure and Function of Biomolecules

Two proteins, X and Y, bind to the same ligand, A, with the binding curves shown below. Which of the statement is correct for the graph analysing two proteins?

#Question id: 653

#Unit 1. Structure and Function of Biomolecules

For the enzyme-catalyzed reaction S ~ P, Keq = 5, which of the following curves best represents the change in [S] that occurs with time when S is added to a solution containing the appropriate enzyme?

#Question id: 653

#Unit 1. Structure and Function of Biomolecules

For the enzyme-catalyzed reaction S ~ P, Keq = 5, which of the following curves best represents the change in [S] that occurs with time when S is added to a solution containing the appropriate enzyme?