Categories
Microbiology Physiology & Disease

How to identify Gram-positive cocci

One day, you woke up with a mild irritation on your arm. The skin was red and itchy. You paid no attention. But the next day, you noticed more bumps filled with pus. It looked concerning, so you decided to check it out with your dermatologist. The doctor collected a sample from the wound and […]

Categories
Molecular Biology

Classic experiments: DNA as the genetic material

In a previous post, we learned that DNA is the genetic material of the cells, and one of its most important functions is that it contains genes that carry the information for the determination of the hereditary characteristics. However, scientists were not always aware that DNA was the genetic material. In fact, for the first half […]