Iodine and the thyroid gland Illustration Play

Irregular bone Slideshow Play

Isoforms of creatine kinase Slideshow Play

Isolation of DNA from other cell structures Animation Play

Isolation – the key to speciation Student activity Play

Isolation – the key to speciation Whiteboard exercise Play

Isomerase Illustration Play

Isopycnic centrifugation Animation Play

Isozymes Student activity Play

Isozymes Whiteboard exercise Play

Jawless fish Whiteboard exercise Play

Jawless fishes Illustration Play

Junction between an antigen and a helper T cell Whiteboard exercise Play

Junctional diversity Illustration Play

Junctions between bones Student activity Play

Junctions between bones Slideshow Play

Junctions between bones Simulation Play

Kangaroo rat Illustration Play

Karyogram of the fruit fly Illustration Play

Karyokinesis: anaphase Illustration Play

Karyokinesis: early prophase Illustration Play

Karyokinesis: late prophase Illustration Play

Karyokinesis: metaphase Illustration Play

Karyokinesis: telophase Illustration Play

Karyotype Student activity Play

Karyotype Whiteboard exercise Play

Karyotype Student activity Play

Karyotype; sex chromosomes and sex determination Slideshow Play

Kidney cross-section Illustration Play

Kidney failure Animation Play