Cell BiologyDeep Dive

Types of Stem Cells by Source

Part of Stem Cells and Cell Differentiation — GCSE Biology

This deep dive covers Types of Stem Cells by Source within Stem Cells and Cell Differentiation for GCSE Biology. Stem cell types, differentiation processes, therapeutic applications, embryonic vs adult stem cells, and ethical considerations It is section 2 of 16 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 2 of 16

Practice

20 questions

Recall

25 flashcards

🧬 Types of Stem Cells by Source

1. Embryonic Stem Cells (ESCs)

Source: Inner cell mass of blastocyst (5-6 day old embryo)
Potency: Pluripotent - can become any cell type in the body
Advantages: Unlimited growth potential, can differentiate into any cell type
Disadvantages: Ethical concerns, potential for tumor formation
Applications: Research, potential treatments for spinal cord injuries, diabetes

2. Adult Stem Cells

Source: Various adult tissues (bone marrow, fat, brain, skin)
Potency: Usually multipotent - limited to cells of their tissue of origin
Advantages: No ethical concerns, lower tumor risk, can use patient's own cells
Disadvantages: Limited potency, harder to isolate and grow
Applications: Bone marrow transplants, skin grafts, blood disorders

3. Induced Pluripotent Stem Cells (iPSCs)

Source: Adult cells reprogrammed back to embryonic-like state
Method: Scientists introduce specific proteins that "reprogram" adult cells back to a stem cell state
Advantages: Pluripotent like ESCs but without ethical concerns
Applications: Disease modeling, drug testing, personalized medicine

Practice Questions for Stem Cells and Cell Differentiation

What is a stem cell?

A. An undifferentiated cell that can divide to produce many cell types
B. A specialized cell found only in plant roots
C. A cell that has already differentiated into a nerve cell
D. A bacterial cell that divides by binary fission

1 markfoundation

Explain how sperm cells are adapted for their function.

3 marksstandard

Quick Recall Flashcards

What does 'totipotent' mean?

The highest level of potency - cells can differentiate into any cell type in the organism plus extraembryonic tissues like the placenta. Example: fertilized egg.