Which of the following is correct statement?

A. Co-evolution occurs when two or more species reciprocally affect each other's evolution through the process of natural selection.

B. Co-evolution is likely to happen when different species have close ecological interactions with one another.

C. Plant and insect is classical example of co-evolution to maintain ecological interaction

D. Co-evolution is likely to evolution of similar trait in different species

#Question id: 597

#Unit 1. Molecules and their Interaction Relevant to Biology

The Km values for enzyme reactions such as A + B → C + D

#Question id: 598

#Unit 1. Molecules and their Interaction Relevant to Biology

Which might be a method used for distinguishing among several mechanistic possibilities in a multi-substrate reaction?

#Question id: 599

#Unit 1. Molecules and their Interaction Relevant to Biology

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?

#Question id: 600

#Unit 1. Molecules and their Interaction Relevant to Biology

Two substances are used to produce a certain biological product in an enzyme-catalyzed reaction. It is found that both substrates must bind to the enzyme, first one, then the other before the product is produced. This is an example of a/an ________.

#Question id: 601

#Unit 1. Molecules and their Interaction Relevant to Biology

In a ping-pong reaction which does not occur?

#Question id: 602

#Unit 1. Molecules and their Interaction Relevant to Biology

An inhibitor binds to a site other than the active site of the enzyme. Which statement below correlates with this observation?