Understanding Biology and Astronomy Concepts

Hank Green discusses the nature of science, highlighting recent discoveries about rare animals like the Cuban solenodon and a unique lion population. He explains the Nobel Prize-winning research on sensory receptors and new theories on the moon's formation. The video concludes with a discussion on the impossibility of cloning dinosaurs due to DNA decay, encouraging viewers to engage and subscribe.

Why is Pluto no longer considered a planet?

• It has no atmosphere.

• It is too small.

• It does not clear its orbit.

• It is too far from the Sun.

What is unique about the Cuban solenodon?

• It is the largest mammal in Cuba.

• It has venomous saliva.

• It can fly.

• It is a herbivore.

What is the main threat to the Cuban solenodon?

• Invasive species

• Deforestation

• Climate change

• Hunting by humans

What distinguishes the lions at the Addis Ababa Zoo?

• They have a unique genetic makeup.

• They have no manes.

• They are the largest lions in the world.

• They are the only lions in captivity.

What did Robert Lefkowitz and Brian Kobilka discover?

• G protein-coupled receptors

• The mechanism of photosynthesis

• The structure of DNA

• The cure for cancer

How do G protein-coupled receptors function?

• They transmit electrical signals.

• They produce energy for cells.

• They change shape to activate proteins.

• They store genetic information.

What new theory was proposed about the Moon's formation?

• It was captured by Earth's gravity.

• It was part of Earth that broke away.

• It was created by volcanic activity.

• It formed from a collision with a massive body.

Why can't dinosaurs be cloned?

• Their DNA is too complex.

• Their fossils are too rare.

• They are too large to clone.

• Their DNA has decayed beyond recovery.

What is the half-life of DNA according to recent studies?

• 10,000 years

• 1,000 years

• 521 years

• 100 years

Which extinct animal's DNA was studied to understand DNA decay?

• Dodo

• Mammoth

• Saber-toothed tiger

• Moa