In a certain enzyme-catalyzed reaction the following steps occur:

1. A phosphate group on substrate A is transferred to a side chain of an active site residue of the enzyme.

2. The dephosphorylated form of substrate A dissociates from the enzyme.

3. Substrate B enters the active site and is phosphorylated with simultaneous regeneration of the enzyme in its original form.

What kind of kinetic mechanism is described?

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#Question id: 7499

#General Aptitude

Two trains, one from A to B and the other from B to A, start simultaneously. After theymeet, the trains reach their destinations after 4 h and 9 h respectively. The ration of their speeds is

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#Question id: 7500

#General Aptitude

A man is standing on a railway bridge which is 180 m long. He finds that a train crosses the bridge in 20 seconds but himself in 8 seconds. Find the length of the train and its speed.

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#Question id: 8293

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

The importance of computers and of computer software to modern systematics s is most closely linked to advances in ________.

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#Question id: 8909

#Section 6: Plant, Animal and Microbial Biotechnology

Which of the following terms or structures is properly associated only with animals?

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#Question id: 8910

#Section 6: Plant, Animal and Microbial Biotechnology

Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that only animals derive their nutrition

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#Question id: 8911

#Section 6: Plant, Animal and Microbial Biotechnology

The larvae of some insects are merely small versions of the adult, whereas the larvae of other insects look completely different from adults, eat different foods, and may live in different habitats. Which of the following most directly favors the evolution of the latter, more radical, kind of metamorphosis?