Practice Questions

TLS Online TPP Program

#Question id: 617

Compare the two reaction coordinate diagrams below and select the answer that correctly describes their relationship. In each case, the single intermediate is the ES complex.

#Unit 1. Molecules and their Interaction Relevant to Biology

(a) describes a strict “lock and key” model, whereas (b) describes a transition-state complementarity model.
The activation energy for the catalyzed reaction is #5 in (a) and is #7 in (b).
The activation energy for the uncatalyzed reaction is given by #5 + #6 in (a) and by #7 + #4 in (b).
The contribution of binding energy is given by #5 in (a) and by #7 in (b).

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TLS Online TPP Program

#Question id: 748

#Unit 1. Molecules and their Interaction Relevant to Biology

The bond between the bases and the sugars in DNA referred as:

TLS Online TPP Program

#Question id: 11563

#Unit 7. System Physiology – Animal

Hormones secreted by the posterior pituitary gland are made in the ________.

TLS Online TPP Program

#Question id: 12169

#Unit 8. Inheritance Biology

During the phenotypic variations, the genotype shows variation at different effect given in graph;

According to the graph , this is an example of,

TLS Online TPP Program

#Question id: 19705

#Unit 13. Methods in Biology

Which of the following normally has a slowly depolarizing “prepotential”?

TLS Online TPP Program

#Question id: 19867

#Unit 13. Methods in Biology

Which of the following variants of PCR were devised to prevent non-specific amplification at low temperature?