DNA Vocabulary
What does adenine pair with?
thymine
What did Chargaff figure out?
A goes with T and C goes with G
What type of macromolecule is DNA?
Nucleic acid
What are the 4 nitrogenous bases?
Adenine, Thymine, Cytosine, Guanine (just letters is ok)
DNA replication requires something called.... Without these, replication would never finish.
Enzymes
What is the name of the bond that connects the nitrogenous bases?
hydrogen bond
What did Rosalind Franklin do?
took xray pictures of DNA
What are the sides of the DNA "ladder" made of?
sugar alternating with phosphate
In the second step, the old strands...
are matched up with free floating nucleotides (A-T and C-G)
Why didn't Franklin get the Noble prize?
It is not awarded after death
Where in the cell cycle does replication take place?
Interphase
What is a chromosome?
DNA coiled up
Why is DNA important?
It carries all of the instructions for an organism
Step 3: each daughter DNA contains... (regarding strands)
one original strand and one new strand
What did Watson and Crick do?
Built the first 3d model of DNA
What are the names of all the famous scientists related to DNA structure?
Chargaff, Franklin, Watson, Crick
Why is DNA replication considered semi-conservative?
One of the original strands of DNA is retained (conserved) in the newly constructed strand.
How do we get the new backbones for the new strand of DNA?
sugar of one new nucleotide and phosphate of another bond
What did Wilkins do?
purified the DNA sample to determine the structure and gave Franklin's information to Watson and Crick