Question

2) Write information about stem cells regarding following points.
i) What is meant by stem cells?
ii) Types of stem cells.
111) Uses of stem cells.
iv) Source of stem cells.
v) Preservation of stem cells​

Answer 1

Answer:

(i)Stem cells are special human cells that have the ability to develop into many different cell types, from muscle cells to brain cells. In some cases, they also have the ability to repair damaged tissues.

(ii)embryonic stem cells and non-embryonic(adult) stem cells

(iii)to test new drugs

Answer 2

Explanation:

2)

Ans:-

i) Stem cells are special types of cells having ability to form and restore a different types of cells

ii) There are two types of stem cells - a) Embryonic stem cells b) Adult stem cells

iii) a) Regenerative therapy-

1)Cell therapy - stem cells are used to replace the dead cells in case of conditions like a diabetes, myocardial infarction, Alzheimer's disease, Parkinson's disease, etc.

2) To produce blood cells required in conditions like anaemia, thalassemia, leukemia, etc.

b)Organ Transplantation-In case of failure of organs like kidney and liver those can be a produced with the help of steam cells and a transplanted.

iv) stem cells can be obtained from the red bone marrow, adipose connective tissue and blood besides stem cells can be obtained from blood immediate after birth.

stem cells are present in the umbilical cord by which the foetus is joint to the uterus of the mother. stem cells are also present in the blastocytes stage of embryonic development.

v) for the purpose of a preservation stem cell samples are carefully kept in the small sterile vials those vials are kept in the liquid nitrogen at -135°C to -190°C