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Tardigrades: Microscopic Survivalists

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Questions and Answers

What is the key to tardigrades' survival in harsh conditions?

Their ability to enter a state of cryptobiosis (correct)

Their ability to survive without food or water

Their ability to withstand extreme temperatures

Their ability to regenerate lost limbs

What happens to tardigrades when they enter a state of cryptobiosis?

They enter a state of hibernation and stop all biological activities

They retract their limbs and expel most of the water from their bodies (correct)

They undergo cellular changes to protect themselves from damage

They increase their metabolic processes to conserve energy

How much of their body's water content can tardigrades lose during desiccation?

Up to 50%

Up to 75%

Up to 97% (correct)

Up to 90%

What is the primary factor that allows tardigrades to survive high levels of ionizing radiation?

The presence of protective proteins called Dsup Signup and view all the answers

What is one of the potential applications of understanding tardigrades' resilience?

Improving the preservation of biological materials Signup and view all the answers

How are tardigrades being used as model organisms in astrobiology?

To study the potential for life on other planets with similar conditions Signup and view all the answers

Which of the following is not an extreme condition that tardigrades can withstand?

Exposure to acid Signup and view all the answers

In what range does the length of tardigrades typically fall?

0.1 to 1.5 millimeters Signup and view all the answers

What is the distinctive appearance of tardigrades often compared to?

Bears and pigs Signup and view all the answers

In which of the following environments are tardigrades not found?

Volcanic environments Signup and view all the answers

In which of the following experiments did tardigrades demonstrate their resilience?

Exposure to the vacuum and radiation of space aboard the International Space Station Signup and view all the answers

What is the approximate number of known tardigrade species?

Over 1,300 Signup and view all the answers