Multicellular Organisms - Stem cells and Specialised cells Flashcards
1
Q
- What are stem cells?
- Describe their features
A
Unspecialised cells that can divide to self-renew
* Have the ability to become different types of specialised cells.
* Involved in growth and repair
* Found in the embryo at early stages
2
Q
- What is a specialised cell?
- Describe 2 of its features
A
Cells adapted to perform specific functions within an organism.
* DO NOT have the ability to divide
* No stem cells present to replace them? → part of a tissue or organ remains damaged
3
Q
- What is an organ?
- What is a tissue?
- What is a system?
A
Organ - Structure composed of several different tissues coordinated to perform particular functions
Tissue - Group of similar cells specialised to perform a particular function.
System - Group of organs that work together to perform a particular function
cell → tissue → organ → system → multicelluar organism
4
Q
Name 2 examples of specialised cells
A
Neurons and Xylem cells
