Molecular motors

Okay kiddo, so you know how things move right? Like when you push a toy car and it rolls forward? Well, inside our bodies there are tiny machines called molecular motors that can also move things around.

These motors are made up of special molecules called proteins that kind of look like little machines with legs. They use chemical energy (sort of like how you use the energy from your food to run and play) to walk along special tracks called microtubules or actin filaments.

One type of molecular motor called kinesin is really important because it helps move things around inside our cells. Imagine your room is your cell and your toys are different parts of your cells. Kinesin would be like the little worker who can pick up your toys and move them to where they need to go.

But how does kinesin know where to go and what to pick up? Well, it actually has little "feet" that can sense where it needs to go and what it needs to pick up. It can even carry little vesicles (like tiny delivery trucks) filled with important molecules to where they need to go in the cell.

So molecular motors are like tiny machines in our bodies that can help move things around like cells and important molecules. Pretty cool, huh?