Molecules Of Life
- Created by: Porscha160
- Created on: 26-01-16 19:35
View mindmap
- Molecules Of Life
- Mitochondria are tiny structures found in cells.
- Tissues and cells that need a lot of energy have a lot of mitochondrias in their cells.
- An example would be: liver cells, and muscle cells. They both contain a lot of mitochondria.
- Tissues and cells that need a lot of energy have a lot of mitochondrias in their cells.
- Some cell structure are too small to be seen with a light microscope.
- An example would be Ribosomes.
- They are found in cytoplasm and are the sight of protein synthesis.
- An example would be Ribosomes.
- The Cells Nucleus contains chromosomes
- They are long coils of DNA and are divided into regions called Genes.
- The information contained in genes is in the form of coded instructions called the genetic code
- DNA controls the production of different proteins
- These are needed for the growth and repair of cells.
- Structure of DNA
- There are four different types of bases, shown as A, T, C and G
- In DNA, two strands coil together to form adouble helix.
- There are chemical cross-links between the two strands, formed by pairs of bases.
- Proteins are made in the cytoplasm of a cell, not in the nucleus
- Genes cannot leave the nucleus, so a copy of the gene is needed.
- This copy is able to leave the nucleus to go into the cytoplasm so that proteins can be made by the cell.
- A – T G – C
- Proteins are made from lots of amino acids joined together.
- The sequence of bases determines the sequence of amino acids in a protein molecule.
- The genetic code needed to make a particular protein is carried from the DNA to the ribosomes by a molecule called mRNA. Making:mRNA from DNA is called transcriptionProteins from mRNA is called translation
- Mitochondria are tiny structures found in cells.
Comments
No comments have yet been made