Reproduction by cell division Student activity Play

Reproductive cells Animation Play

Resistors Whiteboard presentation Play

Resistors Class activity Play

Rupture of the DNA molecule Slideshow Play

Sexual reproduction Student activity Play

Sexual reproduction Whiteboard exercise Play

Sickle cell disease Slideshow Play

Sickle cell disease Student activity Play

Sickle cell disease and malaria Illustration Play

Sickle cell disease in the offspring Whiteboard exercise Play

Significance of cell specialization Animation Play

Significance of cell specialization Whiteboard exercise Play

Significance of cell specialization Student activity Play

Single and multicellular organisms Slideshow Play

Size in the natural sciences Slideshow Play

Special cells in plants Slideshow Play

Specific structures of plant cell – vacuole and cell wall Student activity Play

Specific structures of plant cell – vacuole and cell wall Whiteboard exercise Play

Specificity of hormone activity Student activity Play

Sperm cell Illustration Play

Spirogyra Slideshow Play

Splitting of an animal cell Illustration Play

Stages of mitotic cell division Slideshow Play

Standard electrochemical potential Whiteboard presentation Play