Download DUET Master 2018 DU PhD In Biomedcal Sciences Question Paper With Answer Key

Download DUET (Delhi University Entrance Test conducted by the NTA) 2018 DU PhD In Biomedcal Sciences Question Paper With Solution Key

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DUET Last 10 Years 2011-2021 Question Papers With Answer Key || Delhi University Entrance Test conducted by the NTA

Topic:- DU_J18_PHD_BIOSCI_Topic01

DU PhD In Biomedical Sciences

1) What fraction of total blood volume is present in the capillaries at any given time?
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[Question ID = 2778]
1. 25% [Option ID = 11112]
2. 5% [Option ID = 11109]
3. 20% [Option ID = 11110]
4. 15% [Option ID = 11111]
Correct Answer :-

5% [Option ID = 11109]
2) What is the term used for the automated in vitro testing of a large number of compounds using genetically modified cells?

[Question ID = 2797]
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1. The high throughput screening [Option ID = 11186]
2. Robotic testing [Option ID = 11185]
3. Nanotechnology [Option ID = 11188]
4. Multi-screening [Option ID = 11187]
Correct Answer :-
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The high throughput screening [Option ID = 11186]
3) What does quaternary structure of a protein involve?

[Question ID = 2795]
1. The association of two or more peptide chains [Option ID = 11177]
2. The complete three-dimensional conformation [Option ID = 11178]
3. Partial denaturation [Option ID = 11179]
4. Random coil alternating with alpha helix [Option ID = 11180]
Correct Answer :-

The association of two or more peptide chains [Option ID = 11177]
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4) The Michaelis-Menten constant Km is

[Question ID = 2826]
1. Equivalent to the substrate concentration at which Vo is one half of Vmax [Option ID = 11303]
2. Equivalent to the substrate concentration at which Vo is equal to Vmax [Option ID = 11301]
3. Equivalent to the substrate concentration at which Vo is one fourth Vmax [Option ID = 11304]
4. Equivalent to the substrate concentration at which Vo is one third V max [Option ID = 11302]
Correct Answer :-

Equivalent to the substrate concentration at which Vo is one half of Vmax [Option ID = 11303]

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5) The process of correcting bleed over of one fluorochrome into the emission spectra of the other fluorochrome is called

[Question ID = 2799]
1. Voltage adjustment [Option ID = 11195]
2. Compensation [Option ID = 11194]
3. Binary correction [Option ID = 11196]
4. Gating [Option ID = 11193]
Correct Answer :-

Compensation [Option ID = 11194]
6) The time-scale for an electronic transition is much shorter than for vibrational transitions, it can be assumed that inter-nuclear distances will not change during the transition. Which of the statement/s correctly represent the Fluorescence phenomena?
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[Question ID = 2808]
1. Measurement of the fluorescence from a large number of molecules, following a short pulse excitation, will show an exponential decay [Option ID = 11230]
2. All of these [Option ID = 11232]
3. Fluorescence lifetime is the average time that an electron spends in the excited state before a photon is emitted [Option ID = 11229]
4. Fluorescence lifetime is given by the 1/e point of the decay [Option ID = 11231]
Correct Answer :-

All of these [Option ID = 11232]
7) The Ramachandran plot illustrates the fact that

[Question ID = 2805]
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1. the conformation in which both f and ? are 0 is prohibited [Option ID = 11219]
2. the peptide bond is non-planar [Option ID = 11217]
3. each f and ? pair can assume two different conformations [Option ID = 11218]
4. each f and ? pair can assume any conformation [Option ID = 11220]
Correct Answer :-
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the conformation in which both f and ? are 0 is prohibited [Option ID = 11219]
8) Incubating antibodies against the ligand of receptor tyrosine kinase in live cell culture

[Question ID = 2787]
1. none of these [Option ID = 11148]
2. initiate receptor dimerization [Option ID = 11147]
3. inhibits receptor tyrosine kinase activation [Option ID = 11145]
4. activate receptor tyrosine kinase [Option ID = 11146]
Correct Answer :-

inhibits receptor tyrosine kinase activation [Option ID = 11145]
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9) Benzodiazepine receptors are also known as

[Question ID = 2821]
1. serotonin receptors [Option ID = 11283]
2. nicotinic receptors [Option ID = 11282]
3. muscarinic receptors [Option ID = 11281]
4. GABA alpha receptors [Option ID = 11284]
Correct Answer :-

GABA alpha receptors [Option ID = 11284]