Question

Who discovered cell theory​

Answer 1

Theodore Schwann

German scientists Theodore Schwann and Mattias Schleiden studied cells of animals and plants respectively. These scientists identified key differences between the two cell types and put forth the idea that cells were the fundamental units of both plants and animals.

Answer 2

Explanation:

Substances which themselves are not catalysts, but when mixed in small quantities with the catalysts increase their efficiency are called as promoters or activators. Catalytic poisons : Substances which destroy the activity of the catalyst by their presence are known as catalytic poisons. ...