The video explains how caffeine, a common component in tea and coffee, acts as a natural insecticide. It affects bugs by increasing a cellular signaling molecule, causing hyperactivity and tremors, and can be fatal in high doses. However, humans can safely consume caffeine due to their larger size, which requires a much higher dose to be harmful.

What effects does caffeine have on insects?

• It makes them grow faster.

• It causes tremors and hyperactivity.

• It makes them sleepy and lethargic.

• It increases their appetite.

How does caffeine affect the cellular signaling in insects?

• It has no effect on cAMP.

• It increases cAMP and blocks its breakdown.

• It blocks the production of cAMP.

• It decreases the levels of cAMP.

What is the role of cAMP in the effect of caffeine on insects?

• It is a toxin that kills insects instantly.

• It is a signaling molecule that is increased by caffeine.

• It is a hormone that calms insects.

• It is a nutrient that insects need to survive.

Why is caffeine safe for humans to consume?

• Humans are immune to caffeine.

• Humans can break down caffeine faster than insects.

• The dose required to harm humans is much higher than what is consumed.

• Caffeine has no effect on human cells.

Where is caffeine commonly found?

• In grains and cereals.

• In tea and coffee.

• In meat and dairy products.

• In fruits and vegetables.