2.1 Stem Cells, Tissues and Organs Flashcards
0
Q
What are specialised cells?
A
Cells with a specific function.
1
Q
What are stem cells?
A
Cells that divide through mitosis and have the potential to be specialised cells.
2
Q
Give a few examples of specialised animal cells and how they are specialised…
A
red blood cell
- biconcave shape means increased surfaced area for absorbing oxygen
- no nucleus means more space for oxygen
- contain hoe myoglobin to carry oxygen
nerve cells
- long thin fibres to carry impulses
- branching ends to connect with others
sperm cell
- tail for movement
- lots of mitochondria for energy
3
Q
Where are stem cells found?
A
Embryos and various body tissues
4
Q
What are stem cells involved in?
A
Growth and repair
5
Q
What are tissues composed of?
A
Groups of specialised cells with similar functions.
6
Q
What do organs consist of?
A
Groups of tissues which need not have all of the same functions
