Chapter 10 Adhams Notes So Study This One Cuz Its Better Than My Notes Flashcards
What is DNA made up of
Deoxyribose sugar, a phosphate group, and a nitrogen containing base that is either adenine, guanine, cytosine, or thymine
What are two example of purines
Adenine and guanine
What are purines
They have two rings of carbon and nitrogen
What are 2 examples of pyrimidines
Thymine and cytosine
What did Griffith do
Studied mice and pneumonia
What did Avery do
Experiment with bacteria
What was the Hershey chase experiment
They performed experiments with viruses showing that DNA is genetic material. Used radioactive sulfur/phosphorus in a virus.
What is nucleic acid DNA
An organic compound
What is the first step in the process of DNA replication
the separation of the two nucleotide chains
Which enzyme is responsible for “unzipping” the DNA double helix
Helicases
Which enzyme is responsible for facilitating the hydrogen bonding between nucleotides in a new DNA molecule
DNA polymerase
Describe the origin of each strand of the new double helices created after DNA replicates
One strand of the new double helix is from the old strand of DNA while the other is made from complimentary nucleotides nearby
What are the three basic steps of DNA replication
The double helix must unwind and unzip, new complimentary nucleotides are added to the separate strands of nucleotides, and proofreading enzymes fix DNA
Why is it a double helix
the DNA is nucleotides stuck together by convalent bonds. it starts to twist because when it’s forming and the sugars are attracted to each other the covalent bonds turn it into a double helix shape.
Describe the process of DNA replication
The double helix must unwind and unzip, new complimentary nucleotides are added to the separate strands of nucleotides, and proofreading enzymes fix DNA
