1. All living organisms are composed of one or more cells. This means that every living thing, from the smallest bacteria to the largest whale, is made up of cells.

2. The cell is the basic unit of structure and organization in organisms. This means that cells are the fundamental building blocks of life. They carry out all the functions necessary for life, like obtaining nutrients, producing energy, and reproducing.

3. All cells arise from pre-existing cells. This means that new cells aren't created spontaneously, but rather come from the division of existing cells.

How it relates to you:

Cell theory is the foundation of our understanding of biology. It explains how you, and all living things, are built and how life is passed on from one generation to the next. Here's how it relates to you directly:

* You are made of cells: Every part of your body, from your skin and bones to your organs and brain, is composed of trillions of cells working together.

* Your cells perform all the functions of life: Your cells are constantly working to keep you alive, from breathing and digesting food to thinking and feeling.

* Your cells came from pre-existing cells: You began as a single fertilized egg cell, and that cell divided and grew into the complex organism you are today.

Cell theory is not just a scientific concept, it's a reminder that you are connected to all other living things on Earth at a fundamental level.