Question

The first cell was discovered in 1665 by Robert Hooke, who observed non-living cells of cork using a crude microscope and noted that they looked like tiny "rooms in which a monk might live." Almost one decade later, Anton van Leeuwenhoek observed the first living cells, which he dubbed animalcules, meaning little animals. Scientists continued to use these early microscopes to observe cells for over a century, and repeatedly found the cell to be the discrete unit of life. These observations culminated in 1824 with Rene Dutrochet declaring the cell to be the fundamental element of organization. Which tenet of cell theory is described by the paragraph about the historical observations of cells? The cell is the basic unit of every organism. O All cells come from preexisting cells. O An organism is dependent on the total activity of all its cells. O All organisms are composed of one or more cells.

Answer 1

The answer will be the cell is the basic unit of every organism (First option).

Explanation: The three tenets of cell theory includes all of the options apart from the third. So, we can ignore third option. Further, in the paragraph it was not mentioned anywhere that all cells come from preexisting cells. So, we can ignore second option. Further, phrase like 'discrete unit of life', 'fundamental element of organization' only suggest that cell is the basic unit of every organism. So, correct answer will be first option.