Red Blood Cell

Real World Example

Imagine you're trying to carry groceries from your car to your kitchen, but your hands can only hold so much. Just like you need a sturdy, well-designed bag to efficiently carry multiple items from one place to another, red blood cells are designed to carry oxygen throughout the body. The disc shape of a red blood cell is like that perfect grocery bag, maximizing its ability to hold and transport hemoglobin, which is akin to the handles that help carry your essentials—except in this case, the essentials are oxygen molecules being delivered from the lungs to nourish your body's cells.