Deductive reasoning and Venn diagrams Student activity Play

Defence mechanisms in plants Slideshow Play

Detection of proteins Student activity Play

Determination of object size using the light microscope Student activity Play

Determining the concentration of a solution using redox titration (1) Student activity Play

Determining the content of oxalic acid in rhubarb Animation Play

Development of seed plants Slideshow Play

Development of vegetative organs Slideshow Play

Developmental stages of seed plants Student activity Play

Differences between cell division in animal and plant cells Student activity Play

Differences between cell division in animal and plant cells Whiteboard exercise Play

Different modes of reproduction in invertebrates Slideshow Play

Different types of chemical energy Slideshow Play

Different types of immunity Student activity Play

Differentiated cells – neurones Student activity Play

Dioxins Student activity Play

Distribution of stomata in different types of plant Slideshow Play

Diversity of angiosperms Slideshow Play

Dry plant mass Illustration Play

Efferent nerve fibres Illustration Play

Elasticity of artery walls Slideshow Play

Electrolysis of brine Student activity Play

Elements of Group 17 Student activity Play

Energy as an essential factor in muscle contraction Student activity Play

Energy input and energy output Animation Play