Understanding Zombies and Prions

The video explores the enduring fascination with zombies, linking it to the fear of disease, particularly prion diseases. Prions are misfolded proteins that cause brain diseases by converting healthy proteins into harmful forms. These diseases, like mad cow disease and kuru, lead to severe neurological symptoms and are often fatal. The video also discusses the historical context of kuru among the Fore people, highlighting genetic resistance to the disease. Despite the grim nature of prion diseases, the video ends on a lighter note, emphasizing that those who die from these diseases remain dead.

Why do zombies continue to be a popular theme in media?

• They are easy to portray in movies.

• They are a recent cultural phenomenon.

• They represent the fear of disease and death.

• They are a symbol of eternal life.

What are prions?

• Misfolded proteins that cause brain diseases.

• A type of bird.

• Theoretical point particles.

• A type of virus.

How do prions affect proteins?

• They dissolve proteins.

• They enhance protein function.

• They cause proteins to fold into a dangerous shape.

• They prevent proteins from forming.

What is the significance of highly conserved sequences in DNA?

• They indicate important functions that are preserved across species.

• They are unique to each individual.

• They are prone to frequent mutations.

• They are irrelevant to protein function.

What is a symptom of prion diseases?

• Rapid weight gain.

• Increased energy levels.

• Improved memory.

• Unsteady gait and deterioration of speech.

How are prion diseases typically transmitted?

• Through skin contact.

• Through water contamination.

• Through airborne particles.

• Through the consumption of infected nervous tissue.

What historical practice led to the spread of kuru among the Fore people?

• Living in close quarters.

• Using contaminated water sources.

• Hunting wild animals.

• Consuming the brains of deceased individuals.

What genetic trait was found in some Fore women that protected them from kuru?

• A stronger immune system.

• A mutation that provided resistance to prion diseases.

• A natural immunity to all diseases.

• A faster metabolism.

What does the presence of genetic resistance to kuru suggest about human history?

• Cannibalism may have been practiced by human ancestors.

• Humans have always been immune to prion diseases.

• Prion diseases are a recent development.

• Humans have never practiced cannibalism.

What is the outcome for individuals who die from prion diseases?

• They experience a temporary death.

• They can be revived with treatment.

• They remain dead in all cases.

• They become immune to other diseases.