Category Archives: AHL
Another great find from Twitter (follow everyone in this tweet):
Matthew Herper’s short article in Forbes includes this graph, which is a clear link to the efficacy of the rotavirus vaccine. You can access the full pdf from the New England Journal of Medicine here (also brief, with a better graph).
Some questions to think about, connecting this case to the curriculum (11.1 AHL: Defense Against Infectious Disease):
- How does the rotavirus infect its host?
- Why does diarrhea lead to death?
- What type of vaccine is this and how is it produced?
- What challenges are still to be overcome?
The rotavirus vaccine has been a big part of the Bill Gates Foundation’s work, and they have a short video on it here:
Crash Course & SciShow Hanks’s last couple of videos have been on Plant Science: transport and reproduction. Head on over to the main Plant Science AHL page for the topic for the presentations and resources.
This film came out about a year ago, but I saw it for the first time on the History Channel a couple of days ago. A very enlightening view of the omnipresence of corn and corn-products in our food. From corn-fed beef to corn-starch and high-fructose corn syrup (boo!), industrial production of corn is in all facets of our diet.
In the film, two friends set out to produce an acre of corn and track how it grows and where is goes. Inspired by the Omnivore’s Dilemma and in tune with other recent super-docs (Super Size Me, Food Inc., The End of the Line), King Corn is a sensitive and educational film that manages not to stray into anti-industry polemic.
This extended clip from PBS shows the first 20-minutes of the movie:
It’s amazing to see that the corn farmers can’t even feed themselves with the corn they grow – it is not fit to be eaten! Instead it is bred and grown for maximum starch output. If you get a chance, watch it.
One impactful scene explains how high fructose corn syrup came to be and how it is made. Something to surely make you think twice about the contents of the processed foods we eat. Here’s a challenge – check the labels in the supermarket and see how may products contain it.
An updated version of the presentation for the HL students, with more focus on random orientation vs independent assortment. for more resources and links, zip over to the 10.1 Meiosis page.
Random orientation refers to the behaviour of chromosomes in metaphase:
Independent Assortment refers to the alleles of unlinked genes:
You’ve got to love Tom McFadden’s Meiosis rap: