Question

1. what are the two types of stem cells?

and

1. which type of stem cell is capable of dividing and differentiating into any cell type?

hint! it is the fertilized egg.

1. explain why embryonic stem cells cannot be used to make a baby.
2. why do scientists think it is important to do research using stem cells?

Explanation:

1. Stem cells are classified into two main types based on their origin and potential. Embryonic stem cells come from embryos and have the ability to develop into any cell type. Adult stem cells are found in various tissues of the adult body and are more limited in their differentiation potential.
2. The fertilized egg is a totipotent stem cell, which means it can divide and differentiate into any cell type in the body, including extra - embryonic tissues.
3. Embryonic stem cells cannot be used to make a baby because they lack the necessary epigenetic and genomic programming that occurs during normal embryonic development. Additionally, ethical considerations prevent the use of embryonic stem cells for reproductive purposes.
4. Scientists think it is important to do research using stem cells because they have the potential to treat a wide range of diseases and injuries. Stem cells can be used to regenerate damaged tissues, develop new therapies, and study the mechanisms of disease.

Answer:

1. Embryonic stem cells and adult stem cells.
2. Totipotent stem cell.
3. Embryonic stem cells lack the necessary epigenetic and genomic programming for normal embryonic development, and there are ethical considerations.
4. Stem cells have the potential to treat diseases and injuries, regenerate tissues, develop new therapies, and study disease mechanisms.