Practice Questions

TLS Online TPP Program

#Question id: 14085

The edge of an A:T base pair displays the chemical groups in the order in the major groove. The code would be

#Unit 1. Molecules and their Interaction Relevant to Biology

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#Question id: 27679

#Unit 1. Molecules and their Interaction Relevant to Biology

#Question id: 27680

#Unit 1. Molecules and their Interaction Relevant to Biology

Prediction of the structure of a protein based only on its chemical and physical properties is done by

#Question id: 27681

#Unit 1. Molecules and their Interaction Relevant to Biology

The structural database for the Structural Classification of Proteins is

#Question id: 7289

#Unit 1. Molecules and their Interaction Relevant to Biology

The following scheme shows the flowering status of a plant species and the photoperiodism. Which of the following conclusions is most appropriate?

#Question id: 68

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the following functional groups given in column I with their respective representatives 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.

COLUMN I	COLUMN II
	ΔH	ΔS	ΔG = ΔH – TΔS
1.	−	+	a. The reaction is both enthalpically and entropically opposed. It is nonspontaneous (endergonic) at all temperatures.
2.	−	−	b. The reaction is enthalpically opposed (endothermic) but entropically favored. It is spontaneous only at temperatures above T = ΔH/ΔS.
3.	+	+	c. The reaction is enthalpically favored but entropically opposed. It is spontaneous only at temperatures below T = ΔH/ΔS.
4.	+	−	d. The reaction is both enthalpically favored (exothermic) and entropically favored. It is spontaneous (exergonic) at all temperatures.