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January 2024 term · Big Data and Biological Networks · BSBT4002

Big Data and Biological Networks Quiz 1: 25 February 2024 (January 2024 term)

The IIT Madras BS Big Data and Biological Networks (Big Data and Biological Networks) Quiz 1 paper sat on 25 Feb 2024, in the January 2024 term: 29 questions for 50 marks in 120 minutes. Every question is below with its answer. Take it as a timed mock test to be marked, or read it through first.

Questions
29
Marks
50
Duration
120 min
MCQ
14
MSQ
9
Numerical
2
Written
4

Updated

Official paper: IIT M DEGREE AN2 EXAM QDB2 25 Feb 2024 · No negative marking.

Question 1

+2 marksOne correct option

The density of the network given below is

  1. A

    0.7

  2. B

    0.28

  3. C

    1.4

  4. D

    1.2

Show answer

Correct answer

  • A

    0.7

Question 2

+2 marksOne correct option

Consider a bipartite graph with two node sets, A and B. Set A contains 5 nodes, and Set B con-tains 7 nodes. If the graph has a total of 23 edges, the average degree of the bipartite graph is

  1. A

    2.7

  2. B

    1.91

  3. C

    3.83

  4. D

    3.2

Show answer

Correct answer

  • C

    3.83

Question 3

+2 marksOne correct option

Using the following code to answer the question below

What output will be printed by the code?

  1. A

    [0, 1, 1, 1, 0, 0]

  2. B

    [0, 1, 0, 0, 1, 0]

  3. C

    [2, 3, 4]

  4. D

    [1,2, 3, 4]

Show answer

Correct answer

  • C

    [2, 3, 4]

Question 4

+2 marksOne correct option

Which of the following is a characteristic property of Erdös –Rényi random networks?

  1. A

    Scale-free degree distribution.

  2. B

    Small-world phenomenon.

  3. C

    Uniform probability of edges between nodes.

  4. D

    Hierarchical modular structure.

Show answer

Correct answer

  • C

    Uniform probability of edges between nodes.

Question 5

+2 marksOne correct option

Match the following omics approaches and the techniques used to study them

  1. A

    i-c, ii-c, iii-d iv-a

  2. B

    i-b, ii-c, iii-a, iv-a

  3. C

    i-c, ii-d, iii-a, iv-b

  4. D

    i-b, ii-c, iii-d iv-a

Show answer

Correct answer

  • B

    i-b, ii-c, iii-a, iv-a

Question 6

+2 marksOne correct option

Assertion: RNA polymerase II is responsible for transcribing protein-coding genes in eukaryotic cells.
Reason: RNA polymerase II recognizes and binds to the promoter regions of protein-coding genes, initiating the transcription process.

  1. A

    Both the assertion and reason are correct, and the reason is a correct explanation of the assertion.

  2. B

    Both the assertion and reason are correct, but the reason is not a correct explanation of the assertion.

  3. C

    The assertion is correct, but the reason is incorrect.

  4. D

    The assertion is incorrect, but the reason is correct.

Show answer

Correct answer

  • A

    Both the assertion and reason are correct, and the reason is a correct explanation of the assertion.

Question 7

+2 marksOne correct option

Assertion: The binding of RNA polymerase to the promoter region is a crucial step in transcription. Reason: The promoter region consists of sequences that is recognised by the RNA polymerase.

  1. A

    Both the assertion and reason are correct, and the reason is a correct explanation of the assertion.

  2. B

    Both the assertion and reason are correct, but the reason is not a correct explanation of the assertion.

  3. C

    The assertion is correct, but the reason is incorrect.

  4. D

    The assertion is incorrect, but the reason is correct.

Show answer

Correct answer

  • B

    Both the assertion and reason are correct, but the reason is not a correct explanation of the assertion.

Question 8

+2 marksOne correct option

Match the GWAS term with its description.

Column AColumn B
ASNP1Visualization of genomic regions associated with traits or diseases
BP-value2A statistical measure indicating the strength of association between a genetic variant and a trait.
CManhattan plot3Patterns of non-random association of alleles at different loci.
DLinkage disequilibrium4Common type of genetic variation analysed in GWAS
  1. A

    A - 2, B - 1, C - 4, D - 3

  2. B

    A - 4, B - 3, C - 1, D - 2

  3. C

    A - 4, B - 2, C - 1, D - 3

  4. D

    A - 3, B - 2, C - 4, D - 1

Show answer

Correct answer

  • C

    A - 4, B - 2, C - 1, D - 3

Question 9

+3 marksOne or more correct options

Choose the bipartite graphs from the options representing various graphs, shown below:

Select all that apply.

  1. A
  2. B
  3. C
  4. D
Show answer

Correct answers

  • A
  • B

Question 10

+3 marksOne or more correct options

In the graph shown below:

Select all that apply.

  1. A

    Only the red node has high betweenness

  2. B

    The blue node and the red node have high betweenness

  3. C

    The blue node has high betweenness and high degree

  4. D

    The red node has a high degree

Show answer

Correct answers

  • B

    The blue node and the red node have high betweenness

  • C

    The blue node has high betweenness and high degree

Question 11

+3 marksOne or more correct options

Choose the TRUE statement

Select all that apply.

  1. A

    A smaller characteristic path length indicates a network is tightly connected.

  2. B

    In an Erdös–Rényi G(n ,p) network, there are hub nodes to which new nodes connect with higher probability, as the network grows.

  3. C

    The degree distribution of Erdös–Rényi G(n ,p) network follows the Poisson distribution, for large n

  4. D

    In a hypergraph, every hyper-edge is a subset of V × V where V is the set of all vertices in the graph.

Show answer

Correct answers

  • A

    A smaller characteristic path length indicates a network is tightly connected.

  • C

    The degree distribution of Erdös–Rényi G(n ,p) network follows the Poisson distribution, for large n

Question 12

+3 marksOne or more correct options

What happens to the connectivity of Erdös–Rényi G(n ,p) random networks as the probability increases?

Select all that apply.

  1. A

    The network becomes more disconnected.

  2. B

    The network transitions to a fully connected graph.

  3. C

    The average degree of the network increases.

  4. D

    The diameter of the network increases.

Show answer

Correct answers

  • B

    The network transitions to a fully connected graph.

  • C

    The average degree of the network increases.

Question 13

+2 marksNumerical answer

Use the attached graph to answer the given subquestions:

The diameter of the given network is ____

Show answer

Correct answer: 4

Question 14

+2 marksNumerical answer

Use the attached graph to answer the given subquestions:

The clustering coefficient of node 5 is ________
NOTE: Enter your answer in one decimal place.

Show answer

Correct answer: 0.1

Question 15

+2 marksOne correct option

Use the attached graph to answer the given subquestions:

The given graph is

  1. A

    Labelled, undirected, unweighted

  2. B

    Bipartite, labelled, undirected, unweighted

  3. C

    Complete, labelled, unweighted

  4. D

    Unlabelled, weighted, undirected

Show answer

Correct answer

  • A

    Labelled, undirected, unweighted

Question 16

+1 markOne correct option

What is the role of topoisomerase in DNA replication

  1. A

    Synthesis of a new DNA strand from 5’->3’ using the parental strand as a template.

  2. B

    Relieving of DNA supercoiling by formed dues to unwinding of the two strands.

  3. C

    Prevents annealing of the parental strands.

  4. D

    None of these.

Show answer

Correct answer

  • B

    Relieving of DNA supercoiling by formed dues to unwinding of the two strands.

Question 17

+1 markOne correct option

GWAS is used for
A. It aims to find a relation between genotype and phenotype by studying the gene products affecting the phenotype.
B. Identifying the association between genotype and phenotype by comparing statistically significant genetic variants of individuals in a population.

  1. A

    Only A

  2. B

    Only B

  3. C

    Both A and B

  4. D

    None of these.

Show answer

Correct answer

  • B

    Only B

Question 18

+1 markOne correct option

What is the primary focus of transcriptomics?

  1. A

    Study of protein structures.

  2. B

    Examination of DNA sequences.

  3. C

    Analysis of gene expression at the RNA level.

  4. D

    Investigation of cell morphology.

Show answer

Correct answer

  • C

    Analysis of gene expression at the RNA level.

Question 19

+1 markOne correct option

What is the primary advantage of Next-Generation Sequencing (NGS) over traditional Sanger sequencing?

  1. A

    Longer read lengths.

  2. B

    Higher accuracy.

  3. C

    Higher throughput.

  4. D

    Lower cost per base.

Show answer

Correct answer

  • C

    Higher throughput.

Question 20

+1 markOne correct option

Which of the following represents the start codon in mRNA that initiates translation?

  1. A

    AUG

  2. B

    UGA

  3. C

    UAA

  4. D

    CCC

Show answer

Correct answer

  • A

    AUG

Question 21

+1 markOne or more correct options

Which of the following is/are correct regarding DNA replication

Select all that apply.

  1. A

    DNA Replication occurs from 5’-> 3’ end.

  2. B

    The leading strand is synthesised in a continuous manner.

  3. C

    DNA polymerase cannot initiate DNA replication.

  4. D

    The lagging strand is synthesised in a continuous manner.

Show answer

Correct answers

  • A

    DNA Replication occurs from 5’-> 3’ end.

  • B

    The leading strand is synthesised in a continuous manner.

  • C

    DNA polymerase cannot initiate DNA replication.

Question 22

+1 markOne or more correct options

Which of the following is/are true regarding RNA

Select all that apply.

  1. A

    RNA has Uracil instead of Thymine

  2. B

    RNA has a deoxyribose sugar backbone.

  3. C

    tRNA is translated to protein

  4. D

    RNA is more stable than DNA

Show answer

Correct answer

  • A

    RNA has Uracil instead of Thymine

Question 23

+1 markOne or more correct options

Select the correct statements about stop codons.

Select all that apply.

  1. A

    Stop codons signal the beginning of translation.

  2. B

    There are three different stop codons in the standard genetic code.

  3. C

    Stop codons do not specify any amino acid.

  4. D

    Mutations converting a stop codon into a start codon can result in normal protein synthesis.

Show answer

Correct answers

  • B

    There are three different stop codons in the standard genetic code.

  • C

    Stop codons do not specify any amino acid.

  • D

    Mutations converting a stop codon into a start codon can result in normal protein synthesis.

Question 24

+1 markOne or more correct options

Application of genomics include

Select all that apply.

  1. A

    Studying evolutionary patterns across different strains and species.

  2. B

    Identifying the gene expression patterns in cells.

  3. C

    Studying post translational modifications.

  4. D

    Identify genetic associations to phenotypic traits.

Show answer

Correct answers

  • A

    Studying evolutionary patterns across different strains and species.

  • D

    Identify genetic associations to phenotypic traits.

Question 25

+1 markOne or more correct options

Which of the following statements accurately describe the goals of the 1000 Genomes Project?

Select all that apply.

  1. A

    To study the gene expression patterns amongst different individuals

  2. B

    To catalogue the genetic variations in human populations from different ethnic groups.

  3. C

    To identify common and rare variants that affect various phenotypes in human genome.

  4. D

    To provide a comprehensive resource for understanding human genetic diversity

Show answer

Correct answers

  • B

    To catalogue the genetic variations in human populations from different ethnic groups.

  • C

    To identify common and rare variants that affect various phenotypes in human genome.

  • D

    To provide a comprehensive resource for understanding human genetic diversity

Question 26

+3 marksWritten answer

Read the sequence of the sample obtained from sangers sequencing from 5’-> 3’ based on the gel picture given below.

Show answer

Correct answer: GTACCCGAAATCAGGA

Question 27

+1 markWritten answer

Answer the given subquestions from the plot.

What is the name of the plot?

Show answer

Correct answer: Manhattan plot

Question 28

+1 markWritten answer

Answer the given subquestions from the plot.

Identify the causal SNPs from the plot. (Separate each answer with a space or a comma)

Show answer

Correct answer: A B C D E or A,B,C,D,E or A, B, C, D, E

Question 29

+1 markWritten answer

Answer the given subquestions from the plot.

Identify the SNP with the highest statistical significance.

Show answer

Correct answer: A