Questions

Ganges

Queen Elizabeth I

Humans cannot digest cellulose because they are lacking with the enzymes responsible to breakdown the beta acetal linkages.

The temperature danger zone for the food that cannot be stored for long time is between 5 degrees to 63 degrees centigrade.

Fructose or Levulose is the monosaccharide that is responsible for the sweet taste of fruit. 

Monosaccharides are the simplest of all sugars, contain at least three carbon atoms, and are the building blocks of all carbohydrates.

The trick here is to follow the structure of the statement. The blank is followed by 'of' and thus the blank will take a filler that can be followed grammatically by 'of' and also manages to give a proper meaning. On the basis of these filters, none of the options except option 2 makes any sense.