a chemical structure that has two or more atoms held together by a chemical bond. Water is a molecule of two hydrogen atoms and one oxygen atom (H2O)... more
If you’ve ever made a volcano for a school project you might remember how mixing simple kitchen items can create an explosion out of nowhere. When you bring together different molecules, sometimes they react and change, just like a homemade volcano.
When we get sick, we often go to a doctor to find out how to get better. Sometimes the doctor may prescribe medicine to fight off whatever is making us sick, like bacteria or a virus. For more serious illnesses, the doctor may need to perform surgery to remove a dangerous growth or repair a damaged organ. But what if the thing that is making you sick is your own DNA? What kind of medical treatment would you need then?
The light-dependent reactions take place in the thylakoid membrane, inside chloroplasts. Since they are light 'dependent' reactions, you can guess that these reactions need light to work. Remember that the purpose of this first part of photosynthesis is to convert sunlight energy into other forms of energy?
Every living thing uses DNA as the instructions for life. But how can we be sure that something so small is actually there at all? Here is one experiment that you can do at home or school that will actually let you see DNA.
This set of bits will teach you about the tiny world on which life depends:
the parts inside a cell.
Karla Moeller
City life can be stressfull for people, but what about for other animals? Learn what scientists found out about the effects of city life on the stress and health levels of birds.
Pierce Hutton
Much like a mechanical watch, living things only work when all the gears work together. Some of the tiniest of gears are proteins. Learning about the shape and size of these proteins is the job of X-ray crystallography.
Did you ever think the search for the “fountain of youth” would end up inside of our very own cells? There are some scientists that have found that parts of our cells might hold the answer to aging and diseases like cancer.
Benjamin Katchman
