10 Questions
Which of the following is a key component of cell theory?
Cells are the basic unit of structure
Who is credited with the discovery of cells?
Robert Hooke
Which statement best describes the current consensus on cell theory?
Cell theory is still being debated
Which of the following is a reason why some biologists disagree with the first tenet of cell theory?
Discovery of non-cellular entities
What is the main function of cells?
Structural organization
Which of the following events is NOT part of the cell cycle?
Partitioning of cytoplasm
What are the two main stages of the cell cycle in eukaryotic cells?
Interphase and mitosis
What occurs during interphase of the cell cycle?
DNA replication
What happens during the mitotic phase of the cell cycle?
Separation of replicated chromosomes
What are the control mechanisms that ensure proper replication and division of cellular components called?
Cell cycle checkpoints
Study Notes
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.
Test your knowledge of cell theory in biology with this quiz! Explore the fundamental concepts of cells as the building blocks of life, their role in organism structure and reproduction, and the origins of cells. Challenge your understanding of this scientific theory and see how much you know!
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