The Science Behind Fermented Foods and Our Senses

The video discusses the benefits of fermented foods, including easier digestion, increased nutritional value, and probiotics. It also explains how airplane conditions like low humidity and air pressure affect taste and smell. Finally, it covers the concept of diffusion, explaining how the smell of hot food travels through the air and why it diminishes as food cools.

What is one of the primary benefits of fermented foods?

• They are easier to digest.

• They are low in calories.

• They are high in sugar.

• They contain artificial preservatives.

Why can lactose intolerant people consume certain fermented foods?

• Fermentation removes all lactose.

• Fermentation adds lactose.

• Microorganisms break down lactose.

• Fermentation increases lactose content.

How does the dry air in an airplane affect our senses?

• It dries our nose and mouth, reducing smell and taste.

• It enhances our sense of smell.

• It increases humidity.

• It makes our taste buds more sensitive.

What happens to the air pressure inside an airplane?

• It fluctuates constantly.

• It is increased to match outside pressure.

• It is decreased compared to outside pressure.

• It remains the same as outside pressure.

Why might food appear unappealing in an airplane?

• Due to increased air pressure.

• Due to enhanced taste buds.

• Because of dry air and decreased smell.

• Because of increased humidity.

What is diffusion in the context of smelling food?

• The process of heating food.

• The mixing of aromatic gases with air.

• The process of eating food.

• The cooling of food.

Why is it easier to smell hot food from a distance?

• Hot food is heavier.

• Hot food is more colorful.

• Hot food is louder.

• Hot food releases more aromatic gases.

What happens to the aromatic gases of food as it cools?

• They vibrate faster.

• Their kinetic energy decreases.

• They gain kinetic energy.

• They become more aromatic.

How does temperature affect the rate of diffusion?

• Higher temperature decreases diffusion.

• Lower temperature increases diffusion.

• Higher temperature increases diffusion.

• Temperature has no effect on diffusion.

What is the result of decreased kinetic energy in aromatic gases?

• Decreased rate of diffusion.

• No change in diffusion rate.

• Increased rate of diffusion.

• Increased smell from a distance.