30 Questions
What hypothesis did Louis Pasteur disprove with his swan-neck flask experiment?
Spontaneous generation
Which scientist(s) initially proposed the Cell Theory?
Shleiden and Schwann
What did Louis Pasteur's swan-neck flask experiment demonstrate?
Life can only arise from preexisting life.
What did Shleiden and Schwann propose about the origin of living creatures?
All living creatures are formed by cells.
According to the Cell Theory, what is the structural unit of organisms?
Cells
What principle states that all cells come from preexisting cells?
"Omnis cellula ex cellula" principle
Who formulated the Cell Theory?
Theodor Schwann
Which scientist discovered the myelin sheath in peripheral nerve fibers?
Theodor Schwann
Who established the omnis cellula ex cellula theory?
Rudolf Virchow
Which scientist is considered the father of Cellular Pathology?
Rudolf Virchow
Which discipline emerged to study cells?
Cytology
Who expanded the cellular theory to include animals, unifying Botany and Zoology?
Theodor Schwann
What is the primary role of adult stem cells in a living organism?
To maintain and repair the tissue where they are found
Where are embryonic stem cells obtained from?
Inner mass of preimplantation-stage embryos
What is the source of umbilical cord stem cells?
Umbilical cord
What differentiates induced pluripotent stem cells from adult stem cells?
Genetically reprogrammed differentiated adult cells
Why are ethical issues a concern for the widespread study of embryonic stem cells in humans?
They come from preimplantation-stage embryos
Which type of adult stem cell can develop into some or all specialized cell types of a tissue or organ?
Mesenchymal stem cells
Which of the following is NOT a characteristic of Transmission Electron Microscopy (TEM)?
The sample must be very thick
What is the primary function of Fetal Bovine Serum (FBS) in cell culture media?
To promote cell proliferation through growth factors
Which of the following best describes the principle behind Scanning Electron Microscopy (SEM)?
The specimen is bombarded with a beam of electrons, and scattered/emitted electrons are collected to generate a 3D image
What is the approximate magnification range of Electron Microscopy?
Up to 100000x
Which of the following components of cell culture media is responsible for maintaining the appropriate pH?
Bicarbonate buffer
What is the purpose of including phenol red in cell culture media?
To detect medium acidification
What are the four required reprogramming factors for induced pluripotent stem cells (iPS)?
Oct4, Sox2, cMyc, Klf4
What type of stem cells are Tooth Stem Cells (TS)?
Mesenchymal stem cells
Who received the Nobel Prize Award in 2012 for the discovery of induced pluripotent stem cells?
Dr. Yamanaka
Which of the following is NOT a potential application of Tooth Stem Cells (TS)?
Producing immune cells
What is the defining characteristic of induced pluripotent stem cells (iPS) and Embryonic Stem (ES) cells?
Pluripotent nature
What major advantage do Tooth Stem Cells (TS) offer in regenerative medicine?
Autologous nature
Learn about the Cell Theory formulated by Theodor Schwann and Matthias Jakob Schleiden. Understand their contributions to the understanding of cells, tissues, and the myelin sheath in nerve fibers.
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