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Practice Reading: Fill in the Blanks (Dropdown)
ID: #43996
Tardigrades
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Tardigrades, also known as water bears, are microscopic animals that can live in almost any environment, from the deep sea to the frozen poles. They have a remarkable ability to enter a of deep hibernation when faced with harsh conditions such as high temperatures, radiation, or dehydration. But how do they do it? Researchers have discovered that tardigrades use tiny molecular sensors in their cells to the level of harmful molecules which are produced by stress. These sensors an amino acid called cysteine, which changes its structure and function when oxidized by harmful stress molecules. This the tardigrades to enter or exit hibernation, depending on the situation. The researchers say that this mechanism may help us understand the ageing process and the possibility of long-term space travel.
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