The perceived difficulty of general biology depends on individual strengths, learning styles, and prior knowledge. However, compared to introductory chemistry and physics, it's often considered easier in terms of mathematical complexity and depth.
While some argue the volume of information to memorize in biology makes it challenging, the foundational principles are generally less mathematically intensive than those in physics or chemistry. The reference provided suggests the scope of material in introductory biology courses might be less dense than in introductory physics or chemistry. This does not mean biology is necessarily "easy" for everyone; rather, it might require a different approach to learning, focusing more on memorization and understanding complex systems than on mathematical problem-solving.
Therefore, "easy" is subjective. Someone who excels at memorization and understanding biological systems might find it relatively easy. Someone who struggles with these aspects may find it difficult. Ultimately, success in general biology, like any subject, depends on dedication, effective study habits, and a genuine interest in the material.