Question

New cells are generated from
A. Bacterial fermentation
B. Regeneration of old cells
C. Pre-existing cells
D. Abiotic materials.

Answer 1

Hint:New cells are created from a process called cell division. The new cells are produced when a cell, called the mother cell, divides into new cells called daughter cells.

Complete answer:
To answer this question, first, we need to know about the cell's structure and composition. Cells are the functional, structural and biological basic blocks of all live beings. A cell can divide by itself. Thus, they are called as the building blocks of life.
Each cell consists of a liquid known as the cytoplasm, which is surrounded by a membrane. Also found in the cytoplasm which consists of many biomolecules such as nucleic acids, proteins and lipids. Therefore cellular structures known as cell organelles are at rest in the cytoplasm.
Now, let us find the solution from the option.
New cells obtained from pre-existing cells. Rudolf Virchow (1985) first described that cells separated out and new cells are developed from pre-existing cells. He changed the phenomenon of Schleiden and Schwann to provide cell theory as an ultimate form.

Cell theory is explained as -
->All living organisms consist of cells and are formed by cells.
->All cells obtained from previous cells.

Thus, the correct option is C. i.e. Pre-existing cells.

Note: Cells were discovered by Robert Hooke in 1665, who mentioned them for their similarity to cells stopped by Christian monks in a monastery. Cell theory, first modified in 1839 by Matthias Jakob Schleiden and Theodor Schwann, mentioned that all organisms are consisted of one or multiple cells, those cells are the basic block of function and structure in all living beings, and in that way all cells produced from pre-existing cells.