cell Theory Principles
What are the three main postulates of cell theory?
1) All living things are made up of cells.
2) A cell is the smallest unit of structure and function in a living thing.
3) All cells arise from preexisting cells.
what are the different types of cells?
prokaryotic, eukaryotic, plant, animal
What tool greatly contributed to cell theory?
The microscope
How does cell division contribute to development, tissue repair, and growth in multicellular organisms?
Increases in size by adding more cells, to replace damaged or dead cells, and to regenerate tissues
What is the most distinct difference between meiosis and Mitosis?
Meiosis is sexual reproduction, Mitosis is asexual reproduction
How are cells apart of human life?
It asserts that all living things are made up of one or more cells
The mitochondria, as it originated from bacteria rather than its own genetic material
Which scientists contributed the most to creating cell theory?
Robert Hooke, Mattias Schleiden, and Rudolf Virchow
How do different cell types develop from a single fertilized egg?
cell differentiation
What are the stages of Mitosis?
Prophase, Metaphase, Anaphase, Telophase (PMAT)
Why is cell theory a theory, not a law?
It explains fundamental principles of biology related to cells, but it does not describe anything.
How many types of cells are in the Human body?
200 different types of cells
Who was the first person to see cells under the microscope and give them a name?
Robert Hooke
What are the exceptions to cell theory?
Viruses, as they are non-cellular entities
What are the types of cells in Meosis?
Gamete cells (Haploid/ Diploid)
What can an error in cell division lead to?
Uncontrolles growth of cells/ cancer
What is found in Plant cells but not animal cells?
Cell wall, chloroplast, Large central vacuole
Who had the conclusion that cells could only come from other cells?
Rudolf Virchow
How does cell theory support the concept of evolution?
Because of genetic diversity within meiosis, evolution occurs through changes within cells
How do cells divide?
Growth, DNA replication, and division into two daughter cells
What is an ethical consideration related to using cell theory in biotechnology?
the responsible use of human tissue and biospecimens
What is the biggest difference between prokaryotic cells and eukaryotic cells?
The absence of a Nucleus in prokaryotic cells
what piece of evidence led to the discovery that all living things are made up of cells?
the discovery of structures in cork by Robert Hooke
How do cellular structures work together in the cell theory?
Forms the basic units of life and enable the complex functions of living organisms
What type of cell division creates an exact copy of the parent cell?