Did unicellular or multicellular life appear first ?

5) these are organisms where the genetic material is not bound by a nucleus. they are usually unicellular.

1. the is the thinnest part of the earth. 2. the is the thickest part of the earth. 3. what metals are mentioned in the text?

Enzymes are proteins that speed up reactions by providing an additional energy source supplying additional molecules for the reaction removing inhibitors that slow down reactions lowering the amount of energy required