Question

Please answer the following questions below.

1. Stem Cell Properties - List and describe the two main properties of stem cells. In your answer, include the different types of potencies?

2. Normal or cancer cells? You are given two flasks of cells. One contains cells from normal tissue while the other contains cells from a human cancer. Before you begin your studies, you accidently erased the labels off both flasks. Now you no longer know the identity of each sample. Describe two (2) appropriate experiments you would carry out to determine which flask contains the cancer cells.

3. Integrins comprise an extensive family of cell adhesion molecules (CAMs). Explain their ability to regulate transmembrane signal transduction based on their structure. What physical properties do they possess that make them good at such a role?

4. Certain cells within the adrenal gland secrete adrenaline when they receive an electrical signal from the nervous system resulting in their intracellular calcium levels to suddenly increase. How is this observation consistent with your knowledge of regulated cell secretion?

Answer 1

1. Stem Cell Properties - List and describe the two main properties of stem cells. In your answer, include the different types of potencies?

The two properties of stem cells are-

Potency- The ability to form any kind of cell is called potency.

Totipotent- A kind of cell that can give rise to any cell is called totipotent.

Multipotent- A kind of cell that can give rise to many organs.

Unipotent- A kind of cell that can give rise to only one organ.

Another property is self-renewal- the ability to go through numerous cycles of cell division while maintaining the undifferentiated state. They can renew themselves for a longer duration of time.