2021 · Paper 1

Complete GATE XL 2021 Paper 1 overview, original pages and practice · Timed previous-paper practice

Questions 43–45 of 125. Imported answers require review unless explicitly marked reviewed.

Question 18

Open question

XL-QMSQ2 marksNeeds review

With respect to sodium dodecyl sulphate - polyacrylamide gel electrophoresis (SDS-PAGE), which of these statement(s) is/are true?

Your answerSelect all correct options. You can choose more than one.

A.

Ethidium bromide is used to track the progress of electrophoretic mobility

B.

β-mercaptoethanol is used to reduce disulphide bonds

C.

The protein migrates towards the anode

D.

The lower molecular weight protein migrates slower than the larger molecular weight protein

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Question 19

Open question

XL-QMSQ2 marksNeeds review

In the plot given below, the solid line represents oxygen binding to hemoglobin under physiological conditions. The broken line represents the condition(s) of



Your answerSelect all correct options. You can choose more than one.

A.

High CO₂ concentration

B.

Increase in 2,3- Bisphosphoglycerate concentration

C.

High pH

D.

Loss of cooperativity

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Question 20

Open question

XL-QMSQ2 marksNeeds review

Considering the open chain forms, which of the following pair(s) represent/s an epimer?

Your answerSelect all correct options. You can choose more than one.

A.

D-mannose and D-fructose

B.

D-glucose and D-mannose

C.

D-glucose and D-fructose

D.

D-galactose and D-glucose

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