Phosphohexose isomerase is one of the enzyme of glycolysis which catalyzes Glucose 6-phosphate to Fructose 6-phosphate, enzyme bind with the hexose in their active site by opening the structure. The ring opening and closing reactions are catalyzed by an active-site present amino acid such as

#Question id: 5012

#11. Evolution and Behavior

#Question id: 5014

#11. Evolution and Behavior

 Following geological time period and major evolutionary event?

I. Devonian                            A. Gymnosperms dominant

II. Jurassic                               B. Amphibians diversify; first reptiles

III. Carboniferous                  C. Mammals appear

IV. Triassic                           D. Seed plants appear

#Question id: 5015

#11. Evolution and Behavior

 During which of the following largest mass extinction recorded in the history of life on Earth.

#Question id: 5017

#11. Evolution and Behavior

Arrange these events from earliest to most recent.

1.  emission of lava in what is now Siberia at time of Permian extinctions

2.  emission of lava that solidified at the same time as iron-bearing terrestrial rocks began to rust

3.  emission of lava that solidified at the same time as rusted iron precipitated from seawater

4.  emission of lava in what is now India at time of Cretaceous extinctions

#Question id: 5018

#11. Evolution and Behavior

Which event is nearest in time to the end of the period known as snowball Earth?

#Question id: 5019

#11. Evolution and Behavior

A major evolutionary episode that corresponds in time most closely with the formation of Pangaea was the