Extremophiles Lesson

​Extremophiles

Multiple Choice

Deep ocean technology has discovered organisms in hydrothermal vents that do not rely on sunlight to survive. What do these organisms use as their energy source?

• chemosynthesis
• electrical charge
• hydropower
• thermal heat

Multiple Choice

Organisms that can live in extreme environments are called:

• hooligans

• extremists

• extremophiles

• extremely rare

Multiple Choice

What generates the heat required to fuel hydrothermal vents?

• The sun

• Cold seeps

• Volcanism

• Underwater plants

Match

Match the following

• Cold seeps

• Hydrothermal Vents

• Extremophile

• Alvin

• Chemosynthesis

an area of the ocean floor that has a high concentration of energy rich nutrients

an opening in the sea floor out of which heated mineral-rich water flows

a microorganism that lives in conditions of extreme temperature,

a crewed deep-ocean research submersible

the synthesis of organic compounds by using energy derived from resources other than the sun

• an area of the ocean floor that has a high concentration of energy rich nutrients

• an opening in the sea floor out of which heated mineral-rich water flows

• a microorganism that lives in conditions of extreme temperature,

• a crewed deep-ocean research submersible

• the synthesis of organic compounds by using energy derived from resources other than the sun

Archaea and bacteria

Multiple Select

What types of environments do extremophiles live in? (select all that apply)

• very high or low temperatures

• very high Salt concentration

• room temperature

Multiple Select

How are Archaea and Bacteria similar? (Select all that apply)

• Prokaryotes (no nucleus)

• Unicellular organisms

• Have genetic material

• Have ribosomes

• Can be heterotrophs or autotrophs

Multiple Choice

Which statement best explains which Domain the Tradigrade is classified in Taxonomy?

• Archaea because it is microscopic, has no nucleus and lives in extreme environments.

• Eubacteria because it is microscopic, has no nucleus and lives in mosses.

• Eukarya because it has a nucleus.

• None of the above are Domains.

Multiple Choice

What does Tardigrades mean in latin?

• Roly poly

• Slow stepper

• Squashed face

• Big claws

Multiple Choice

Which Kingdom do Tardigrades belong in?

• Eubacteria

• Fungi

• Protista

• Animalia

Multiple Choice

How have Tardigrades adapted to environmental stresses such as a lack of water, surviving extreme cold, and living in salt water?

• Anhydrobiosis

• Cryobiosis

• Osmosisbiosis

• All of the above

Multiple Choice

How many legs do Tardigrades have?

• two

• four

• six

• eight

Multiple Choice

Tardigrades can survive in

• extreme hot and cold temperatures

• hydrothermal vents

• high levels of radiation

• vacuum of space

• all of the above!

Multiple Select

Tardigrades are also called

• rock lobsters

• water bears

• moss piglets

• space monkeys

Multiple Select

How do tardigrades reproduce?

• Parthenogenesis - females only

• Sexually - Give live birth (viviparous)

• Sexually - lay eggs (oviparous)

• Asexually - budding

Multiple Choice

Because of their ability to survive a variety of conditions, tardigrades are considered

• polyextremophiles

• herbivores

• scavengers

• mesophiles

Multiple Choice

Cryobiosis is the ability to survive through

• lack of oxygen

• lack of water

• freezing temperatures

• increased salinity

• lack of carbon dioxide

Multiple Choice

How long can a tardigrade survive ANHYDROBIOSIS?

• 100 days

• 1000 hrs

• 30 years

• 100 years

Multiple Choice

When a tardigrade dries out what does it do?

• Curls up into a ball like structure known as a ‘tun’

• Extends its legs and goes rigid

• Nothing, they just stop moving

• Flatten themselves out