The Algae That Saved an Astronaut's Life

The video explores bioluminescent organisms, focusing on dinoflagellates. It recounts Jim Lovell's experience with bioluminescence during a flight and explains the ecological role of dinoflagellates. These organisms are crucial marine primary producers but can cause harmful red tides. Dinoflagellates have unique features like the dinokaryon nucleus and unusual swimming patterns. They exhibit diverse photosynthesis methods, including kleptochloroplasts. Their bioluminescence serves as a defense mechanism, attracting predators of their predators.

What natural phenomenon helped Jim Lovell navigate safely during his flight mission?

• Aurora Borealis

• Moonlight

• Bioluminescent plankton

• Starlight

What is the primary ecological role of dinoflagellates in marine ecosystems?

• Decomposers

• Primary producers

• Top predators

• Parasites

What is the name of the unique nucleus found in dinoflagellates?

• Nucleolus

• Chromatin

• Nucleoid

• Dinokaryon

How do some dinoflagellates acquire chloroplasts?

• Through photosynthesis

• By stealing them from algae

• By genetic mutation

• Through symbiosis with bacteria

Which of the following is NOT a way dinoflagellates can move?

• By gliding on surfaces

• Using flagella

• By drifting with currents

• By whirling in water

What molecule is responsible for the bioluminescence in dinoflagellates?

• Hemoglobin

• Luciferin

• Chlorophyll

• Carotene

What is the hypothesized purpose of bioluminescence in dinoflagellates?

• To scare away predators

• To attract mates

• To communicate with other dinoflagellates

• To attract predators of their predators