GATE XL format:msq PYQs & Answers — Page 13

Questions 121–130 of 179. Imported answers require independent review unless marked reviewed.

Topic practice 179 questionsPage 13 of 18

Which of the following techniques is/are used for determining the three-dimensional structure of proteins?

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

Cryo-electron Microscopy

Circular Dichroism

Nuclear Magnetic Resonance Spectroscopy

X-ray Diffraction

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Among the following statements, which is/are TRUE regarding the replication of DNA?

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Replication is bidirectional and conservative in nature.

Replication in eukaryotes takes place at multiple Ori sites simultaneously.

Both the strands replicate in discontinuous manner.

One strand replicates in continuous while the other replicates in discontinuous manner.

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Which of the following statements is/are TRUE for Colchicine?

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

It binds to tubulin molecule and disrupts the assembly/polymerization of microtubule.

It inhibits crossover of chromosomes during meiosis.

It inhibits chromosome condensation during Prophase.

It blocks mitotic cells in Metaphase.

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Identify the correct statement(s) related to grain polysaccharides among the followings.

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

Dextrin are a group of low molecular weight polysaccharides produced by dry hydrolysis of starch.

Amylose is a linear polymer of D-glucose units joined by α (1→6) glycoside linkages.

Amylopectin is a branched chain polymer of D-galactose monomer units.

Retrogradation is a process of reassociation of amylose and formation of crystalline structure by gelatinized starch upon cooling.

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Consider the following reaction:

The CORRECT statement(s) related to mono-chlorination at carbon-2 position is/are

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

The reaction proceeds through alkyl radical intermediate

Complete inversion of configuration at carbon-2 takes place

Complete retention of configuration at carbon-2 takes place

A mixture of enantiomers is formed

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Consider the following enzyme catalyzed reaction:

where E is enzyme, S is substrate, ES is enzyme-substrate complex and P is product.

The CORRECT statement(s) for the above reaction is/are

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

Maximum possible rate of product formation is dependent on

and initial concentration of enzyme.

For a low substrate concentration, the rate of product formation is first order with respect to enzyme and also first order with respect to the substrate.

The rate of product formation is independent of the concentration of enzyme-substrate complex.

For a very high substrate concentration, initial rate of product formation is zero order with respect to the substrate.

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Consider the following reaction:

The CORRECT pathway(s) involved in the reaction is/are

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E2 followed by isomerisation

E1 followed by isomerisation

1 followed by isomerisation

Isomerisation through carbocation

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Which of the following carbohydrates has/have a

glycosidic linkage?

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

Cellulose

Chitin

Lactose

Maltose

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Which of the following statements about IgA is/are correct?

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

It is secreted into colostrum.

It is transported across the cell by transcytosis.

Its secretion is facilitated by poly-Ig receptor.

It primarily exists as a dimer in serum.

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Which of the following plant diseases is/are caused by bacteria?

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

Angular leaf spot of cotton

Citrus canker

Apple scab

Leaf curl of papaya

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GATE XL format:msq PYQs

Question 99

Question 100

Question 101

Question 119

Question 21

Question 22

Question 23

Question 41

Question 42

Question 51