The Ultimate Bioluminescence Quiz

Estimated Completion Time
2 min
What is bioluminescence?
Animals that can only survive in natural light.
Animals that make their own light.
Bioluminescence is when an animal makes its own light and carries it around on its body.
The study of animals that glow.

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What is the process of incandescence?
Light produced by heat.
Incandescent light is light produced through heat.
Light produced by a chemical reaction
Light produced by friction.

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How do animals create light?
through incandescence
through luminescence
Animals create light through a chemical process, whereby chemicals mix together producing a glow. This process is know as luminescence.
through triboluminescence

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Why is luminescence known as cold light?
because it generates heat
because it doesn't require heat
Luminescence neither requires heat nor does it produce heat. It is therefore referred to as cold light.
because it is used in cold places

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Why is it difficult for scientists to study bioluminescence in creatures?
because animals stop glowing when captured
Bioluminescent animals sometimes exhaust their glowing abilities when captured or the process of capture may damage the light-producing organs. This makes it difficult to study them.
because animals only glow in the sea
because bioluminescent animals are hard to find

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When is light produced?
when an electron moves up an atomic orbit
when an electron moves down an atomic orbit
Electrons move up an atomic orbit when they get excited by energy. When an electron settles back down, it releases the energy, known as a photon, in the form of light.
when two electrons collide

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Where do most bioluminescent creatures exist?
in the ocean
Most bioluminescent creatures are found in the sea. However, animals such as certain fungi, glow worms and fireflies are bioluminescent creatures found on land.
on land
in the sky

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How many zones of the ocean are there, according to amounts of light that reach it?
two
three
There are three zones, according to depth. The first zone is the sunlit zone, called the euphotic zone. The second zone is the twilight or disphotic zone. The third and deepest zone is the midnight or aphotic zone.
four

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In which ocean zone are most bioluminescent sea creatures found?
euphotic
disphotic
Most bioluminescent creatures exist in the disphotic or twilight zone of the ocean, which generally extends from about 660 feet to about 3,000 feet deep. Examples of bioluminescent animals that live here are jellyfish, squid, shrimp, krill, marine warms and fish.
aphotic

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Why is the sea a blue-green color?
because blue and green have longer wavelengths
because the ocean absorbs these colors
because the ocean does not absorb these colors
Red, orange and yellow light from the sun are absorbed by seawater and violet light is scattered in the water. This means that the only light that reaches the twilight zone are blue and green wavelengths, creating the blue-green color of the sea. Blue and green have short wavelengths which helps them to penetrate the water.

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What color light do most bioluminescent animals produce?
red
white
green-blue
Bioluminescent creatures create a light of about 440 to 479 nanometers, which matches the blue-green color of the ocean. Their glow can travel a long way and blends in with the sunlight from above. Sometimes bioluminescent animals are the primary source of light in an area.

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What is the milky sea phenomenon?
when bioluminescent animals produce milky waste from their light
when bioluminescent animals glow simultaneously creating a glow in the sea
Dinoflagellates are a species of single-cell plankton that glow when disturbed by tides, storms, marine creatures or passing ships. These disturbances cause large amounts of dinoflagellates to glow simultaneously, producing a glow so bright that it can interfere with marine navigation.
when bioluminescent creatures come to the surface of the ocean during a storm

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Why do animals use bioluminescence?
to communicate
as self-defense
both of the above
Animals use bioluminescence for a range of reasons, including to communicate, to locate food in dark areas, to mimic other animals and as self-defense to blind predators.

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How do animals use their light as camouflage?
They blend in with the light above.
Some animals light their undersides in order to blur their outlines and blend in with the light above, since it is difficult to see below into the dark parts of the ocean below but it is easier to see silhouettes of animals above.
They blend in with the ocean floor.
They blend in with other creatures.

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What triggers the reaction that creates light in an animal?
a digestive trigger
a neurological trigger
Triggers may be neurological, mechanical or chemical. There are two types of substances involved in the light producing process. One is known as luciferin, a light producing substance, and the other is a luciferase, an enzyme that catalyzes the chemical reaction.
a lymph trigger

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The terms luciferin and luciferase come from the Latin word lucifer. What does lucifer mean?
the devil
glowing creature
light-bringer
Lucifer means light-bringer. Luciferins and luciferases are generic terms for the types of chemicals that take part in the bioluminescence chemical reaction. Many different substances can be luciferins and luciferases, depending on the bioluminescent animal.

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Some creatures produce light using light-producing bacteria. On which part of the animal do these bacteria live?
in a light organ
Bacteria with light-producing qualities that live in a symbiotic relationship with an animal will live in a light organ on the host animal's body.
in the eyes
on the tail

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How do animals turn on and off the light from the bacteria?
They release the bacteria from the light organ.
They cover the bacteria.
Light-producing bacteria glow all the time. To turn on and off the light, the host animal may cover them with a piece of skin or they may be able to pull their light organs into their bodies.
They poison the bacteria.

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What happens to an organism's light when it uses a fluorescent substance?
Its light becomes brighter.
Its light dims.
Its light changes color.
Fluorescent substances absorb the blue-green light emitted by the animal and emits it as a different color. Some animals use fluorescent substances, such as green fluorescent protein, to adjust the color of the light they emit.

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Scientist have been using bioluminescent creatures to research which diseases?
cancer
Scientists are researching diseases such as cancer and Alzheimer's using bioluminescence. They have given bioluminescent traits to non-luminescent creatures to see how this effects the creature.
diabetes
multiple sclerosis

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iStockphoto.com/Katherine Matthews
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