TED-ED: Why is cotton in everything? - Michael R. Stiff

The video explores the unique properties of cotton, highlighting its use in armor due to its strength and flexibility. It delves into the biology of cotton fibers, explaining their growth stages, from elongation to cell wall strengthening, and the importance of cellulose in fiber development. The video also discusses the final stages of cotton growth and its diverse applications, from textiles to currency. Modern scientific advancements aim to enhance cotton's qualities further.

What unique properties make cotton armor effective for protection?

• It is made of metal.

• It is waterproof.

• It is lightweight and transparent.

• It combines strength with flexibility.

How does the timing of cell wall strengthening affect cotton fiber?

• It alters the fiber's ability to absorb water.

• It determines the color of the fiber.

• It affects the fiber's length and quality.

• It changes the fiber's temperature resistance.

What percentage of the US dollar bill is made from cotton?

• 90%

• 60%

• 50%

• 75%

What is the primary component of the secondary cell wall in cotton fibers?

• Cellulose

• Protein

• Lignin

• Starch

What potential advancements are being explored in cotton production?

• Reducing the fiber's water absorption

• Making the fiber edible

• Enhancing softness, strength, and resilience

• Increasing the fiber's color variety