Organisms

The Human Digestive System

NOM, NOM, NOM! Lunch sure was delicious! But, do you know what happens to food once it enters your body? The human body can do a lot of amazing things. One of the coolest things it can do is digest food into energy. After you take a bite of food, your teeth work to grind it up. You swallow, and it travels into your stomach. Strong acids and other chemicals slowly break it down into smaller and smaller pieces. The food is passed into your small intestine, which pulls out the nutrients it needs to make you strong and give

What’s In A Cell?

Every living thing in the world is made up of cells. Cells are the building blocks of life. There are two basic cell types: prokaryotic and eukaryotic. Prokaryotic Cells When life first emerged on earth, it was made up of very simple organisms called prokaryotic cells. Though life evolved to be more complex, many organisms are still prokaryotic. For instance, there are trillions of bacteria that live in your small intestine that are still prokaryotic. Eukaryotic Cells Complex organisms need their cells to do many things. Some of these things are only possible inside of organelles. Organelles are inside cells

The Mysterious Human Body

You probably don’t realize it, but as you are reading this your body is doing amazing things! Energy from the food you ate for breakfast is currently powering your brain. Your brain is tracking the screen and telling your hand when to keep scrolling. The muscles in your hand need oxygen to work. Your heart is constantly beating to carry oxygen to your hand and brain, so they can continue working. Don’t forget about your lungs that collect oxygen, your stomach that had to digest your food, your intestines that absorbed nutrients, and all the other organs in your body

Photosynthesis: The Original Green Energy

Plants and algae can do something that you can’t do: they make their own food! Using photosynthesis, plants make complex food molecules that give us energy. In the process, they also make oxygen. Every time you eat fruits or vegetables, or even meat or dairy, you are also consuming energy that was first captured by plants. The Ingredients for Photosynthesis Plants make their own food molecules – sugars called glucose – by absorbing light and combining molecules from the air and from water. The three ingredients plants need for photosynthesis are sunlight, carbon dioxide and water. Plants get the carbon