Here are some that I have incorporated into my curriculum in the past and found to be useful:
Food Webs: http://teacher.scholastic.com/activities/explorer/ecosystems/be_an_explorer/map/line_experiment14.swf
http://www.ecokids.ca/pub/eco_info/topics/frogs/chain_reaction/index.cfm
http://www.gould.edu.au/foodwebs/kids_web.htm
http://www.vtaide.com/png/foodchains.htm
Food Webs: http://teacher.scholastic.com/activities/explorer/ecosystems/be_an_explorer/map/line_experiment14.swf
http://www.ecokids.ca/pub/eco_info/topics/frogs/chain_reaction/index.cfm
http://www.gould.edu.au/foodwebs/kids_web.htm
http://www.vtaide.com/png/foodchains.htm
Digestion:
http://kitses.com/animation/swfs/digestion.swf
http://exhibits.pacsci.org/nutrition/noflash_nutrition.html
http://kitses.com/animation/swfs/digestion.swf
http://exhibits.pacsci.org/nutrition/noflash_nutrition.html
Genetics:
http://learn.genetics.utah.edu/ (home page –great website!)http://learn.genetics.utah.edu/content/begin/traits/
http://learn.genetics.utah.edu/content/begin/traits/karyotype/
http://nobelprize.org/educational/ (this is a great website, not just for genetics – scroll down on this page to see a list of some of the interactive games!)http://www.pbs.org/wgbh/nova/sheppard/analyze.html (DNA fingerprinting)http://www.pbs.org/wgbh/aso/tryit/dna/
http://learn.genetics.utah.edu/ (home page –great website!)http://learn.genetics.utah.edu/content/begin/traits/
http://learn.genetics.utah.edu/content/begin/traits/karyotype/
http://nobelprize.org/educational/ (this is a great website, not just for genetics – scroll down on this page to see a list of some of the interactive games!)http://www.pbs.org/wgbh/nova/sheppard/analyze.html (DNA fingerprinting)http://www.pbs.org/wgbh/aso/tryit/dna/