Stem Cells (AQA GCSE Biology Combined Science): Flashcards
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Define stem cells
Define stem cells
Undifferentiated cells that can divide & become specialised cells
Pluripotent meaning
Pluripotent meaning
Can differentiate into any cell type in the body
Origin of embryonic stem cells
Origin of embryonic stem cells
From a zygote when egg and sperm cell fuse
Multipotent meaning
Multipotent meaning
Can form a limited range of cell types
Adult stem cell location (example)
Adult stem cell location (example)
In tissues throughout body, e.g., bone marrow
Medical use of adult stem cells
Medical use of adult stem cells
Bone marrow transplants for leukaemia & blood disorders
Location of meristematic stem cells in plants
Location of meristematic stem cells in plants
In meristems at tips of roots and shoots
Use of meristematic stem cells
Use of meristematic stem cells
Plant cloning to produce identical plants with desirable traits
Therapeutic cloning definition
Therapeutic cloning definition
Creating embryo with patient's genetic material for stem cells
Ethical concern with embryonic stem cells
Ethical concern with embryonic stem cells
Harvesting involves destruction of the embryo