Question

which of the following are the 3 main components of the cell theory? select 3 answers. a cells come from pre - existing cells. b all living things are made of one or more cell. c cells are the basic structure of all living things. d only animals are made of cells. e all cells carry out cellular respiration.

Explanation:

The cell theory has three main components: all living things are made of one or more cells (B), cells are the basic structure of all living things (C), and cells come from pre - existing cells (A). These are fundamental tenets of cell theory. Option D is incorrect as not only animals are made of cells (plants, fungi, etc. are too), and option E is incorrect as not all cells carry out cellular respiration in the same way (e.g., anaerobic organisms).

Answer:

A. Cells come from pre - existing cells.
B. All living things are made of one or more cells.
C. Cells are the basic structure of all living things.