Animals living in aquatic habitats have diversified and evolved through time. They eventually occupy ecological niches a..
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Read this tutori..
Regulation of Biological Systems tutorials are focused on the modulation of biological systems from cell to population l..
Learn about the general structure of a eukaryotic gene, the transcription factors, and post-transcriptional regulation....
ATP is the energy source that is typically used by an organism in its daily activities. The name is based on its structu..