The regulative ability of the limb bud has recently been highlighted by a remarkable experiment of nature. In numerous ponds in the United States, multilegged frogs and salamanders have been found. The presence of these extra appendages has been linked to the infestation of the larval abdomen by parasitic trematode worms. The eggs of these worms apparently split the developing tadpole limb buds in several places, and the limb bud fragments develop as multiple limbs. This shows:

A. The limb field represents a harmonious equipotent system. 

B. The limb field do not represents harmonious equipotential system because different types of genes express during proximal to distal growth.

C. The limb field represents coupled system wherein one gene maintain the expression of other genes.

D. The limb field represents a harmonious equipotent system because only Hox genes expresses all along the limb axis.

E. The limb field represents cells of the limb region can be instructed to form any part of the limb. 

Which of the following statements are correct?

 

#Question id: 69

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is the diastereomer of the following compound?

#Question id: 70

#Unit 1. Molecules and their Interaction Relevant to Biology

The dimensions of living cells are limited, on the lower end by the minimum number of biomolecules necessary for function, and on the upper end by the rate of diffusion of solutes such as oxygen. Except for highly elongated cells, they usually have lengths and diameters in the range of

#Question id: 71

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is not the priority rule for R, S Configuration?

#Question id: 72

#Unit 1. Molecules and their Interaction Relevant to Biology

For the reaction catalyzed by the enzyme hexokinase: Glucose + ATP → glucose 6-phosphate + ADP the equilibrium constant, Keq, is 7.8 × 10². In living E. coli cells, [ATP] = 5 mM, [ADP] = 0.5 mM, [glucose] = 2 mM, and [glucose 6-phosphate] = 1 mM. Which of the following conclusions made on the basis of the above calculations is incorrect?

#Question id: 73

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the Variation of Reaction Spontaneity (Sign of ΔG) given in Column I with the Signs of ΔH and ΔS given in column II.

#Question id: 73

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the Variation of Reaction Spontaneity (Sign of ΔG) given in Column I with the Signs of ΔH and ΔS given in column II.