Biology WBI11: Respiration, Internal Environment, Coordination and Gene Technology Topical Past Paper Questions

## The microbial food revolution ## Abstract 1 Our current food system relies on unsustainable practices, which often fail to provide healthy diets to a growing population. Therefore, there is an urgent demand for new sustainable nutrition sources and processes. Microorganisms ha…

## Article 1 Risk of heart failure may increase with age due to Y chromosome loss The Y chromosome, involved in sex determination, mysteriously disappears from some men's immune cells as they get older – and that could be fatal (Source: © Biophoto Associates / Science Photo Libra…

## Article 1 1. One species of whitefly, an aphid-like insect, has incorporated a portion of plant DNA into its genome that protects it from leaf toxins. It seems to be the first known example of so-called horizontal gene transfer between a plant and insect in which the transferr…