Science & Nature · 2

What is the name of the protein in bones that provides flexibility?

Answer

Collagen

Collagen is a flexible protein that makes up about 30% of bone. The remaining 70% is mineral deposits like calcium phosphate and hydroxyapatite.

💡 Did you know?

Bones are living tissues that constantly break down and rebuild themselves—your entire skeleton is replaced about every 10 years.

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What is the name of the protein in muscles that contracts to produce movement?

The action of actin and myosin is so efficient that a single muscle cell can contract thousands of times per second.

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How many times per day does the human heart beat on average?

If you lived 80 years, your heart would beat about 3 billion times—a biological feat requiring precision control.

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Fingernails tend to grow fastest on which hand, due to increased blood circulation from more frequent use?

Human fingernails grow faster in summer than winter, and faster on your dominant hand due to increased blood circulation from use.

Science & Nature

What did Einstein famously call quantum entanglement?

In December 2024, scientists detected entanglement between top quarks—the heaviest particles known—over distances impossible to cross at light speed.

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At what temperature can Methanopyrus kandleri cells divide, setting the record for thermal life?

At 122°C (252°F), Methanopyrus kandleri thrives while every other known organism would be instantly destroyed.

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What phenomenon allows the brain to physically restructure itself in response to experience?

The adolescent brain prunes up to 50% of synaptic connections in some regions, creating more efficient neural wiring.