Download Nucleus - Control Center of cell

Name:______________
Date:______________
Nucleus - Control Center of cell
From DNA to Proteins:
Nucleus - Control Center
Contains
•F
•When/how it
•When it
for each cell that determines:
DNA carries master set of instructions for cell function
•De
•Two stranded twisted ladder molecule in shape called a “
”
DRAW A DOUBLE HELIX SHAPE:
Sides of ladder made up of
•Steps of ladder made up of
–A
–G
–T
–C
•
Name:______________
Date:______________
DNA Molecule
Arrangement of bases in DNA directs all
•DNA
are the result of how bases are arranged
.
joins with
(American telephone)
.
joins with
(Canadian government)
Order and number differ. Some molecules of DNA can be
base pairs in length
•
Assignment:
Create your own DNA
•Assignment:
–Using materials to create 3-Dimensional model of DNA
DNA is stored in Chromatin
Chromatin is a substance that contains
• Each strand of chromatin is
of DNA in the nucleus.
•During cell growth
and creates
•Chromatin coils into
(x shaped structure) when
cells ready to
Relationship between DNA-->Chromatin-->Chromosomes
•
QuickTime™ and a
TIFF (LZW) decompressor
are needed to see this picture.
Name:______________
Date:______________
Every Organism has
of chromosomes
•Humans have
(23 pairs one from each parent)
•One pair determines
. XX or XY… why?
•Flies have 4 sets
Compare the two chromosome charts
•
QuickTime™ and a
TIFF (LZW) decompressor
are needed to see this picture.
Genes are found on Chromosomes
•Specific places on Chromosomes contain small segments called
QuickTime™ and a
TIFF (LZW) decompressor
are needed to see this picture.
Store information to produce
different proteins
•Arrangements of bases in gene produce a specific
•
Proteins determine what cells
•Functions of cells determined by proteins created by “
” genes.
•Proteins make a cell
(hair cell, skin cell, sensory cell)
speed up chemical
Specialized proteins called
reactions in cells.
•Protein called
spread information throughout body.
(example growth of bones, puberty)
•
Name:______________
Date:______________
Creation of Proteins
Summarize the steps from your textbook: How does DNA make
proteins?
What’s next for scientists?
•After human genome project
–Must find out how 25,000 genes make 90,000 proteins.
–How can one gene code for more than one proteins?