Biological Networks Quiz
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Questions and Answers

What is a key feature of scale-free networks?

  • Small-world effect due to hubs (correct)
  • Linear path lengths
  • Hierarchical structure
  • Random degree distributions

Why is identifying interactions or correlations important in causality?

  • To introduce hierarchical models
  • To increase network sparsification
  • To establish a causal mechanism (correct)
  • To create random networks

How can outside knowledge contribute to network sparsification?

  • Introduce irrelevant interactions
  • Increase indirect correlations
  • Aid in extracting most likely subnetworks (correct)
  • Lead to false positives

What does the onion structure in networks allow for?

<p>Multi-level responses (C)</p> Signup and view all the answers

In protein modeling, what is the significance of learning amino acid codes?

<p>Learning binding preferences of different proteins (C)</p> Signup and view all the answers

Why do scale-free networks create a small-world effect?

<p>Presence of hubs reducing path lengths (D)</p> Signup and view all the answers

What type of interactions involve stable interactions such as ribosomes, proteasome, and respiratory chain complexes?

<p>Protein-protein stable interactions (A)</p> Signup and view all the answers

Which centrality measure refers to the number of shortest paths that use a node in a network?

<p>Betweenness centrality (A)</p> Signup and view all the answers

What type of network analysis measure is most commonly used for guilt-by-association analyses like predicting proteins as cancer drivers?

<p>Degree centrality (B)</p> Signup and view all the answers

In network analysis, what does network density refer to?

<p>The number of edges compared to the maximum possible edges (C)</p> Signup and view all the answers

Which type of network interaction involves post-translational modifications and steric hindrance?

<p>Protein-protein transient interactions (C)</p> Signup and view all the answers

What is the reciprocal of the average shortest path distance to all other nodes in a network called?

<p>Closeness centrality (C)</p> Signup and view all the answers

How does network centrality influence gene retention or loss?

<p>Influences evolutionary retention or loss (C)</p> Signup and view all the answers

What impact does alternative splicing have on interactome complexity?

<p>Increases interactome complexity (C)</p> Signup and view all the answers

How do Mendelian disease mutations impact protein-protein interactions (PPIs)?

<p>Lead to variations in disease severity (D)</p> Signup and view all the answers

What contributes to organismal complexity and functional diversity according to the text?

<p>Alternative splicing (A)</p> Signup and view all the answers

How can the effects of mutations on disease be predicted according to the text?

<p>Using in-silico methods incorporating structural and network data (D)</p> Signup and view all the answers

What does alternative splicing reveal within a network, according to the text?

<p>Deeper modularity and isoform-level resolution (D)</p> Signup and view all the answers

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