Biology Project tutorial from the University of Alabama explains the molecular events that occur as a pigment molecule absorbs a photon of light during photosynthesis.

Biology Project tutorial from the University of Alabama explains the molecular events that occur as a pigment molecule absorbs a photon of light during photosynthesis.

Biology Project tutorial from the University of Alabama explains the molecular events that occur as a pigment molecule absorbs a photon of light during photosynthesis.

Problem sets, tutorials, and activities related to biochemistry.

This lesson explains the process of diffusion. It explains how diffusion is a passive form of transport, used to move molecules down their concentration gradient. It is 2 of 8 in the series titled "Diffusion."

This lesson explains the process of diffusion. It explains how diffusion is a passive form of transport, used to move molecules down their concentration gradient. It is 4 of 8 in the series titled "Diffusion."