Question

Which of the following is a concept of the cell theory?

1) Simple cells can arise spontaneously from rotting vegetation.
2) A cell is the basic structural and functional unit of living organisms.
3) The subcellular organelle is the basic unit of life.
4) Only higher organisms are composed of cells.

Answer 1

The cell theory states that all living things are made up of cells, which are the structural units of living organisms, and that living cells come from other living cells.

Step-by-step explanation:

The Cell Theory

According to the cell theory, all living things are made up of cells, which is the structural unit of living organisms, and living cells always come from other living cells. Each living thing begins life as a single cell. Some living things, such as bacteria, remain single-celled, while others, like plants and animals, grow and develop into many cells.