The Helix

What problem was the Fibonacci sequence originally developed to solve?

• The growth of plant leaves.

• The arrangement of seeds in a sunflower.

• The population growth of rabbits.

• The structure of seashells.

How is each number in the Fibonacci sequence determined, starting from the third number?

• It is double the previous number.

• It is the sum of the two preceding numbers.

• It is the product of the two preceding numbers.

• It is half of the previous number.

Which natural structure did James Bell Pettigrew consider the "mystery of all mysteries" due to its spiral structure?

• The human ear

• Galaxies

• The human heart

• Romanesco broccoli

What is the primary reason suggested for the prevalence of spiral shapes in nature, such as in a sunflower?

• To attract pollinators.

• To provide structural stability.

• To maximize efficiency in arrangement.

• To deter predators.

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What are two advantages of spiral stairs compared to usual stairs?

• They are more aesthetically pleasing and cheaper to build.

• They are easier to climb and take up less space.

• They are safer and can support more weight.

• They are faster to ascend and require less maintenance.

What did the spiral symbol represent in some ancient civilizations?

• The moon and stars.

• The sun and the circle of life.

• Water and fertility.

• War and power.

What is a key advantage of DNA's double helix spiral shape?

• It makes DNA resistant to all mutations.

• It allows DNA to be compact and efficient, storing vast genetic information.

• It enables DNA to generate its own energy.

• It prevents DNA from interacting with other cellular components.

What two factors contribute to the spiral shape of galaxies?

• Their magnetic fields and solar winds.

• Their age and temperature.

• Their rotation and the presence of dark matter.

• Their light emission and stellar density.