How can I draw figures of any biological processes like the example provided for my manuscript? Is there any easy-to-learn tool or software to draw this type of biological process or pathways?
If you want a simple tool, you can use Microsoft Powerpoint. You can draw using the tools in Powerpoint at the tabs Insert>Shapes>Curve or Freeform. When it comes to drawing the virus, you can draw by using the Shapes tool and "Group" them for you to have a template for a virus.
If you want a profissional tool , you can learn Adobe illustrator on youtube , it is so easy
You can use the following
1. Microsoft PowerPoint
2. Microsoft Visio
3. Abdobe illustrator and Photoshop
4. BioRender (premium)
you can draw pathway using PowerPoint. it is very user-friendly software to connect object .Here tutorial https://youtu.be/U0U4fExognQ
and also to create interactive biology presentation this tutorial will help you https://youtu.be/R-q4dO_hl4c
I use online version of draw.io (URL link: https://app.diagrams.net/). It is simple and useful.
You can use the powerful and friendlier software named Biorender, also for more artistic effect you can use Corel Draw