Within the nucleus of every human cell is the genome
The book of DNA within the human body is 3.2 billion letters long
Contains 46 chromosomes or "chapters" (23 from each parent) which are between 48-250 million letters long
30,000,000 of those letters make up 20,000 genes or "instructions"
There is only 1 instruction gene to every 100 filler genes
The genome contains the "book" of DNA instructions in a cell
The set of DNA in a cell is 3 feet long compressed into one small nucleus
Re-invented by Leeuwenhoek who
discovered "animalcules" AKA bacteria
Leeuwenhoek sent letters about
the discovery to Robert Hooke who discovered the cell
DNA - the book of you
Every human starts as 2 cells which multiply until it becomes 10 trillion
The wacky history of cell theory
Cell Theory
Discovered by two scientists:
Matthias Schleiden &
Theodor Schwann
3. All cells come from
pre-existing cells
2. The cell is the basic units of
structure and organization of
organisms
1. All organisms are composed
of one or more cells
The microscope
First invented by Zacharias Jansen
in the early 1600s,
Cells Webquest
