Unit 2 stem cells and specialised cells Flashcards
Stem cells
Unspecliesed cells that can divide in order to self-renew
Stem cells can
Become different types of cells
Involved in growth and repair
Stem cells can be obtained from
Embryo at a very early stage
Specialisation forms
A variety of cells, tissue and organs
Multi cellular organ sims are made of
More than one cell type
Made of cells tissues and organs
Can organs perform more than one function
Yes
Cells in organs
Are specialised for their function
A group of organs form
A system
Heirarchy
Cells - tissues - organs - system
Stem cells are found
In Embryo
In bone marrow
Plants stem cells
Plant merry stems
Uses of stem cells
Replace damaged cells from diabetics
Therapeutic clowning
Plant clowning
Disadvantages of using stem cells
Spread viral infections
What happens to cells in multicellular oraganisms
Become specialised for different function
Tissue
A group of similar cells carrying out the same function
Organ
Group of different tissues that work together to carry out a particular function
System
A group of organs that work together to carry out a particular function
Examples of animal tissue
Muscle tissue
Nervous tissue
Examples of plant tissue
Xylem
Phloem
Root hair cells
Examples of organs in animals
Brain
Heart
Lungs
Examples of plant organs
Stem
Root
Leaf
Examples of animal system
Digestive system
Respetory system
Nervous system
Examples of plant system
Vascular system in roots
Nervous system
Digestive system
Respitory system
Controls body activities
Breaks down food and absorbe nutrients
Takes in oxegen and releases CO2
Vascular system
Ensures all parts of the plant get water and nutrients needed to grow
Specialised
Cells can change structure to performa particular function
Examples of specialised cells
Skin cells
Nerve cells
Blood cells
Site of mitosis
Plant meristems
