1 nanometer = 0.001 micrometer 1 micrometer = 0.001 millimeter so 1 nm = 0.000001 mm
DESCRIPTION
1 nanometer = 0.001 micrometer 1 micrometer = 0.001 millimeter So 1 nm = 0.000001 mm. Chromosome. Nucleosome. DNA double helix. Coils. Supercoils. Histones. ghr.nlm.nih.gov. www.accessexcellence.org. Nucleic acids (DNA & RNA) - a group of polymers made of nucleotide monomers that…. - PowerPoint PPT PresentationTRANSCRIPT
1 nanometer = 0.001 micrometer
1 micrometer = 0.001 millimeter
So
1 nm = 0.000001 mm
Chromosome
Supercoils
Coils
Nucleosome
Histones
DNA
double
helix
Nucleic acids (DNA & RNA) - a group of polymers made of nucleotide monomers that….
Functions=1.stores hereditary information by2. instructing the building of proteins
Ex. DNA= Deoxyribonucleic Acid RNA= Ribonucleic Acid
Double helix = DNA’s twisted ladder shape
ghr.nlm.nih.gov
www.accessexcellence.org
4 Nucleotides (monomers )A=Adenine bond w/ 2 hydrogen bondsT=Thymine
G=Guanine bond w/ 3 hydrogen bondsC=Cytosine
http://academic.brooklyn.cuny.edu
Parts of Nucleotide (monomer)=• Sugar• Phosphate ladder sides• Nitrogen base
(4 types; A, T, G, C) ladder steps
DNA Code = recipe for making proteins stored in sequence (order) of nucleotide monomers
like letters for word meanings; CAT vs TAC
msu.edu
mhhe.com
Structure Determined by…James Watson and Francis Crick with the evidence from Rosalind Franklin in 1953
jonahprobell.com/famous_photos
DNA Forms
Genome
www.sciencephoto.cm
Chromatin (unwound)
(wound)
DNA Forms Definitions• Genome = full set of chromosomes in
nucleus (46 for humans; 23 from each parent)
• Chromosome = One strand of DNA that coils into an X during cell division. Each contains many distinctive genes.
• Chromatin =Loose uncoiled DNA for access to genes
• Gene =A section of a chromosome that codes for one protein; includes start & stop instructions
• Nucleotide Monomer = Building block of DNA made of a sugar, phosphate and nitrogen base (4 kinds)
AnalogyLibrary
one book
open book
one recipe in book
one letter
Evolutionary Importance• All species have same DNA structure & same DNA recipe code translation into protein
• All species use DNA as molecule of inheritance (you get your genes from your ancestors)
• = all species have a common ancestor (evolution).
maddoxdna.com boards.ign.com
Replication= Process of copying DNA to make 2 identical copies
• When? Right before cell division (mitosis)
• Why?Give new cells a DNA copy
QuickTime™ and a decompressor
are needed to see this picture.
Semi-Conservative process• Semi-conservative- one
half is old DNA and one half is the copy.
• What is made? Identical copies of chromosomes (sister chromatids)
www.britannica.com
Steps of Replication• Helicase enzyme
unzips hydrogen bonds
• DNA polymerase add free nucleotides to one side
• Ligase checks/ fixes errors and glues things together
http://www.biologie.uni-hamburg.de
QuickTime™ and a decompressor
are needed to see this picture.
http://faculty.irsc.edu
http://www.biologie.uni-hamburg.de
Protein Synthesis
faculty.irsc.edu
http://stemcells.nih.gov/info/scireport/appendixa.asp
http://www.chemguide.co.uk/organicprops/aminoacids/dna1.html
http://www.biologyreference.com/Mo-Nu/Nucleotides.html
accessexcellence.org
What is the structure in the box called?
What is the group of polymers it belongs to?
Which structure is the deoxyribose sugar?
The order of them from top to bottom is T-A-G-C. What would be the order of the complementary strand?
A
B C
The entire molecule is called
The monomer in the circle is called a
What is the name of the entire process demonstrated in the illustration?
What are the objects labeled A?
How do the two strands compare when this process is complete?
When in the cell cycle does this process take place?
A
B C
What is the name of the entire process demonstrated in the illustration?
What are the objects labeled A?
During which phase of the cell cycle does this process take place?
This process happens in preparation for cell division called
A
B C
http://www.histol.chuvashia.com/atlas-en/cytol-en.htm C
B
A
Which lettered cell is in prophase?
Which lettered cell has sister chromatids splitting?
What phase is this cell in?
What are the structures label A?
A
uic.edu
BC
A
All the structures collectively in box A are called….
Structures B are called?
Structure C is called?
The purpose of structure C is?