In an animation of the life cycle of HIV, the capsid (HIV’s viral core) is depicted entering the nucleus of a T cell. Credit: Credit: Iwasa lab/University of Utah So—in what would become a weekly trek ...

Enzymes are often described as molecular machines that recognize and process specific molecules. However, they are not rigid ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Deep underground, coal seams are never at rest. As mining operations push deeper into the Earth, the rock layers above press ...