Download Chapter 7 Test Notes

Chapter 7 Science Test
Notes
DNA, Genes, and Candy Canes
• As DNA splits,
complementary
nucleotides are added
to the bases on the
original strands.
• Groups of three
bases code for one
amino acid.
• As messenger RNA is
fed through the
ribosome, it is
matched with transfer
DNA. (tDNA)
I Will Study for My Test!
• A string of nucleotides that has instructions
for a certain trait is a gene.
• A molecule present in all living cells that
plays a role in protein production is called
RNA.
• To be copied, a DNA molecule splits down
the middle.
I could get an “A”
• The rungs of the DNA
ladder are a pair of
bases.
• The sides of the DNA
ladder are made of
sugar and phosphate.
I will study during lunch!
• Watson and Crick
built a DNA model like
a long, twisted ladder.
• Using X-ray
diffraction, Rosalind
Franklin showed the
shape of DNA to be a
spiral.
I could skip lunch and study in the
Library.
• The letters A, T, G,
and C represent the
four bases.
• A string of nucleotides
that has information
for making one trait is
a gene.
Oh! Look I got an A+
• Watson and Crick’s
model of DNA look
like a long, twisted
ladder.
• Rosalind Franklin
made images of DNA
using X-ray
diffraction.
• The amount of
adenine in DNA is
always equal to the
amount of thymine.
Just a little studying of my notes
and who knows?
• Nucleotides are made of a sugar, a phosphate,
and a nitrogenous base.
• DNA is made of subunits called nucleotides.
• A ribosome is the structure that reads the
code on messenger DNA (mDNA).
• Each gene has instructions for making a
protein.
• A string of nucleotides are called a gene.
• DNA look like a twisted ladder.
• Proteins do the job of
unwinding, copying,
and rewinding DNA
inside a cell.
• Erwin Chargaff found
out that adenine
equals thymine in
DNA.
I know! I could study tonight for my
science test on Wednesday.
• Along with a sugar
and a phosphate, the
third part of a
nucleotide is a base.
Have a Nice Day!