The Cell Theory Quiz

Cell Theory

• A key component of cell theory is that all living organisms are composed of one or more cells.

Discovery of Cells

• Matthias Jakob Schleiden and Theodor Schwann are credited with the discovery of cells.

Current Consensus on Cell Theory

• The current consensus on cell theory is that all living organisms are composed of one or more cells, cells are the basic units of life, and all cells arise from pre-existing cells.

Disagreement with Cell Theory

• Some biologists disagree with the first tenet of cell theory, which states that all living organisms are composed of one or more cells, because they believe that some organisms may be acellular, such as viruses.

Function of Cells

• The main function of cells is to carry out the basic functions of life, including metabolism, growth, response to stimuli, and reproduction.

Cell Cycle

• The event that is NOT part of the cell cycle is meiosis, which is the process of gamete formation.

Stages of the Cell Cycle

• The two main stages of the cell cycle in eukaryotic cells are interphase and the mitotic phase.

Interphase

• During interphase, the cell grows, replicates its DNA, and prepares for cell division.

Mitotic Phase

• During the mitotic phase, the replicated DNA is divided equally between two daughter cells, resulting in two genetically identical daughter cells.

Control Mechanisms

• The control mechanisms that ensure proper replication and division of cellular components are called checkpoints.