Health Biosciences Research Approaches Quiz
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Questions and Answers

What is the principle behind Over-Representation Analysis?

  • Statistically evaluating the fraction of genes in a particular pathway that shows changes in expression (correct)
  • Randomly selecting genes for pathway analysis
  • Determining the absolute number of genes in a pathway
  • Assessing the location of genes on a chromosome
  • What does Gene Set Enrichment Analysis (GSEA) fall under?

  • Transcriptomics dataset analysis
  • Gene Ontology Over-Representation Analysis
  • Chromosome mapping
  • Functional Class Scoring (correct)
  • What is the purpose of evaluating the fraction of genes in a pathway that shows changes in expression?

  • To identify the location of genes in a pathway
  • To determine if there is enrichment or overrepresentation in specific biological pathways (correct)
  • To count the total number of genes in a pathway
  • To randomly select genes for analysis
  • What percentage of genes showing big enrichment would indicate overrepresentation of a pathway?

    <p>20%</p> Signup and view all the answers

    In Over-Representation Analysis, what does a significant p-value indicate?

    <p>The genes in a particular pathway are significantly affected</p> Signup and view all the answers

    What does a poor enrichment and no overrepresentation in a pathway correspond to?

    <p>1% of genes belonging to the pathway</p> Signup and view all the answers

    What is the focus of evaluating the fraction of genes in a particular pathway?

    <p>Determining if there is an enrichment or overrepresentation in specific biological pathways</p> Signup and view all the answers

    In Over-Representation Analysis, what does the term 'functional subfunction' refer to?

    <p>Genes belonging to the same biological pathway</p> Signup and view all the answers

    What is the purpose of pathway analysis?

    <p>To put genes in a functional context and identify dysregulated pathways</p> Signup and view all the answers

    What is the focus of Over-representation Analysis (ORA)?

    <p>Identifying whether a pathway is overrepresented in the gene list</p> Signup and view all the answers

    What is the main purpose of Gene Set Enrichment Analysis (GSEA)?

    <p>To determine whether a predefined set of genes shows statistically significant, concordant differences between two biological states</p> Signup and view all the answers

    What does it mean to achieve data reduction in pathway analysis?

    <p>Reducing tens of thousands of genes to tens of pathways</p> Signup and view all the answers

    What does evaluating the fraction of genes in a pathway that shows changes in expression provide?

    <p>More explanatory power about the modified functions/pathways/biological processes</p> Signup and view all the answers

    What is the principle behind Over-representation Analysis (ORA)?

    <p>To compare the number of genes in a pathway with the number of genes in a random gene set</p> Signup and view all the answers

    What is the primary goal of using GEO2R and WebGestalt in Gene Set Enrichment Analysis (GSEA)?

    <p>To perform GSEA and analyze the enrichment of gene sets</p> Signup and view all the answers

    What is the primary goal of performing pathway analysis in the context of a microarray/RNA sequencing experiment?

    <p>To put the genes in a functional context and understand perturbed biological processes and dysregulated pathways</p> Signup and view all the answers

    In pathway analysis, what is the purpose of Overrepresentation Analysis (ORA)?

    <p>To determine if a particular biological process or pathway is overrepresented in the list of genes of interest</p> Signup and view all the answers

    What is the main focus of Gene Set Enrichment Analysis (GSEA) in pathway analysis?

    <p>To determine whether a predefined set of genes shows statistically significant, concordant differences between two biological states</p> Signup and view all the answers

    What is the purpose of using GEO2R and WebGestalt in Gene Set Enrichment Analysis (GSEA)?

    <p>To perform differential gene expression analysis and identify enriched pathways</p> Signup and view all the answers

    What does it mean to achieve data reduction in pathway analysis?

    <p>To reduce the thousands of genes to a smaller number of pathways for better interpretability</p> Signup and view all the answers

    What does evaluating the fraction of genes in a pathway that shows changes in expression provide in pathway analysis?

    <p>Insights into the perturbed biological processes and dysregulated pathways</p> Signup and view all the answers

    What is the focus of evaluating the fraction of genes in a particular pathway in pathway analysis?

    <p>To understand the impact of gene expression changes on the pathway's biological function</p> Signup and view all the answers

    What does Over-Representation Analysis (ORA) aim to statistically evaluate?

    <p>The fraction of genes in a particular pathway that shows changes in expression</p> Signup and view all the answers

    In Over-Representation Analysis, what indicates pathway enrichment?

    <p>A significantly affected group of genes belonging to a function or subfunction</p> Signup and view all the answers

    What does a significant p-value in Over-Representation Analysis suggest?

    <p>The observed results are unlikely to be due to random chance</p> Signup and view all the answers

    What is the focus of evaluating the fraction of genes in a pathway that shows changes in expression?

    <p>Determining if there is an enrichment or not in specific biological pathways</p> Signup and view all the answers

    What does 'functional subfunction' refer to in Over-Representation Analysis?

    <p>Genes belonging to the same biological pathway</p> Signup and view all the answers

    What percentage of genes showing big enrichment would indicate overrepresentation of a pathway?

    <p>20%</p> Signup and view all the answers

    What is the primary goal of using Gene Set Enrichment Analysis (GSEA)?

    <p>To identify whether a set of genes shows statistically significant, concordant differences between two biological states</p> Signup and view all the answers

    What is the purpose of evaluating the fraction of genes in a pathway that shows changes in expression?

    <p>To determine if there is an enrichment or not in specific biological pathways</p> Signup and view all the answers

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