1
JEE Main 2021 (Online) 22th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Thiamine and pyridoxine are also known respectively as :
A
Vitamin B2 and Vitamin E
B
Vitamin E and Vitamin B2
C
Vitamin B6 and Vitamin B2
D
Vitamin B1 and Vitamin B6
2
JEE Main 2021 (Online) 20th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Which one of the following statements is not true about enzymes?
A
Enzymes are non-specific for a reaction and substrate.
B
Almost all enzymes are proteins.
C
Enzymes work as catalysts by lowering the activation energy of a biochemical reaction.
D
The action of enzymes is temperature and pH specific.
3
JEE Main 2021 (Online) 20th July Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Identify the incorrect statement from the following
A
Amylose is a branched chain polymer of glucose
B
Starch is a polymer of $$\alpha$$-D glucose
C
$$\beta$$-Glycosidic linkage makes cellulose polymer
D
Glycogen is called as animal starch
4
JEE Main 2021 (Online) 18th March Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Deficiency of vitamin K causes :
A
Cheilosis
B
Decrease in blood clotting time
C
Increase in blood clotting time
D
Increase in fragility of RBC's
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