JEE Main 2021 (Online) 20th July Evening Shift | Biomolecules Question 42 | Chemistry

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JEE Main 2021 (Online) 20th July Evening Shift

MCQ (Single Correct Answer)

-1

Which one of the following statements is not true about enzymes?

Enzymes are non-specific for a reaction and substrate.

Almost all enzymes are proteins.

Enzymes work as catalysts by lowering the activation energy of a biochemical reaction.

The action of enzymes is temperature and pH specific.

JEE Main 2021 (Online) 18th March Evening Shift

MCQ (Single Correct Answer)

-1

Deficiency of vitamin K causes :

Cheilosis

Decrease in blood clotting time

Increase in blood clotting time

Increase in fragility of RBC's

JEE Main 2021 (Online) 18th March Morning Shift

MCQ (Single Correct Answer)

-1

A non-reducing sugar "A" hydrolyses to give two reducing mono saccharides. Sugar A is

Fructose

Galactose

Glucose

Sucrose

JEE Main 2021 (Online) 17th March Evening Shift

MCQ (Single Correct Answer)

-1

Fructose is an example of :

Heptose

Pyranose

Ketohexose

Aldohexose

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