What are the enzymes called when they are at low temperature?

They are called psycrophiles or cryophiles. These organisms can be found in glaciers or in the Arctic regions. Their enzymes work fine in freezing temperatures. However, just like the enzymes in organisms that live in mild temperatures, the enzymes in psycrophiles have an optimal range

B] nitrogen fixationmight be wrong, so correct me.want extra on your answers? just go on my account and go on questions and answer, or ask in the comments!