Cell Biology
Cell Structure
Cell Division
Transport in Cells
Extra Information
Chromosomes and DNA
Chromosomes carry Genetic Information
Cells are the building blocks of life.
All living things are made of them.
A type of cell Division called mitosis ensures that cells have the same Genetic Information
Types of Cells
Eukaryotic Cells
Found in animals, plants, fungi and protista
The DNA Exists in the Nucleus of a cell with in the chromosomes
Contain cell membrane, cytoplasm and genetic material
Genetic material is the DNA, which is found enclosed in the nucleus
Each Chromosome contain the code production for the particular Protein that is called a Gene
Prokaryotic Cells
Each Chromosome is made from a single Molecule of DNA
Found in bacteria
Contain cell membrane, which is surrounded by cell wall, as well as cytoplasm and ribosomes.
When the Cells divide the DNA copies Itself and then coils to form the Chromosomes
No mitochondria or chloroplasts.
May contain extra small rings of DNA named plasmids, which code for specific features like antibiotic resistance
Chromosome Sets
Each Human Cell Contains 46 Chromosomes and can be arranged into 23 pairs
Each Chromosome pair carries the same types of Genes
The 23rd Pair is the Sex Chromosomes
In Females they have TWO X Chromosomes reverenced at XX
In Males There is an X and a Y Also referenced as XY
In Females they have TWO X Chromosomes reverenced at XX
In Males There is an X and a Y Also referenced as XY
Cell Division
Cells Divide When An Orgasm Grows, An Orgasm Becomes damaged and needs to produce new cells
it is Essential that any new cells Produced Contain specific Genetic Information
The Cell Cycle
Cell Growth
DNA Syntheses - The Chromanones are now Double Stranded
Further Growth occurs and DNA is cheeked for Errors
Mitosis
The Cytoplasm Separates - Two Cells are Formed
Tempary cells resting period or the Cells stop dividing
Then the Proses Restarts from Cell Growth