Question

who first recognized the cell as the universal unit of life?
virchow
van leeuwenhoek
hooke
schleiden and schwann

Explanation:

Schleiden and Schwann are credited with recognizing the cell as the universal unit of life. Schleiden, a botanist, and Schwann, a zoologist, formulated the cell - theory in the 19th century, stating that all plants and animals are composed of cells. Virchow is known for the concept "omnis cellula e cellula" (all cells come from pre - existing cells). van Leeuwenhoek was a pioneer in microscopy and discovered single - celled organisms. Hooke is known for coining the term "cell" when observing cork under a microscope.

Answer:

D. Schleiden and Schwann