Zusammenfassung der Ressource
B5
- Dna - Making Proteins
- Dna molecules contain a genetic
code containing instructions for how
to make all the proteins in your body.
- A-T , G-C
- Dna is a double helix
of Paired bases
- Dna controls the production of
proteins in a cell
- Cells make proteins by
joining amino acids
together
- Proteins are made by
ribosomes in the cell
cytoplasm
- Cell Division
- Mitosis
- New cells are needed
for growth and repair
- First the cell grows
and duplicates its
contents
- Then it splits into two
by Mitosis
- Meiosis
- Forms sperm or egg cells called
Gametes
- Produces new cells that only
have half the original number
of chromosomes
- Involves TWO divisions
- Animal Development
- Have lots of cells that are
specialised to do a particular job
- Cells in an early Embryo can turn
into any type of cell
- Cloning can be used
to make stem cells
- Stem cells may
be able to cure
many diseases
- Phototropism and Auxins
- Phototropism is growth towards
or away from light
- Auxins are plant Growth
Hormones