Systems Level Reasoning | Molecules to Pathways

Question

1.Question 1

What is true about network models?

Network models do not allow directed interactions.

There are no computational tools for the analysis of networks online.

Protein-protein interaction models have nodes as proteins, which are connected by edges, only if the proteins show functional redundancy.

Gene co-expression networks have genes as nodes, which are connected by edges, if their expression correlate under different conditions.



Graph theory analysis of network models was developed in response to the systems biological approach of understanding cellular systems.

Answer 1

1. Gene co-expression networks have genes as nodes, which are connected by edges, if their expression correlates under different conditions.

This statement accurately describes one type of network model, specifically gene co-expression networks. In these networks, genes are represented as nodes, and edges are drawn between nodes (genes) if their expression levels show a correlation under various conditions or treatments. This type of network is commonly used in bioinformatics and systems biology to understand gene interactions and regulatory relationships.