DNA Flashcards
(20 cards)
What is DNA composed up of?
- Carbon
- Oxygen
- Nitrogen
- Hydrogen
- Phosphorus
What type of acid is DNA?
•A nucleic acid
What is the job of DNA?
•Transmit parental information
What type of structure is DNA?
•A polymer which is nucleotides
What makes up nucleotides?
- 5 carbon sugar
- Posphate group
- Nitrogenous base
What are the 4 nitrogenous bases?
- Adenine
- Guanine
- Cytosine
- Thymine
What scientists came up with the DNA model?
•Watson and Crick
Which 2 nitrogenous bases are Purines?
- Adenine
* Guanine
Which 2 nitrogenous bases are Pyrimidines?
- Cytosine
* Thymine
How are DNA chains held together?
•Hydrogen bonds
How many single-strand chains does DNA have?
•Two meaning
What is a twisted double helix?
•DNA
What is DNA backbone made up of?
- Phosphate
* Sugar
What are DNA rungs made up of?
•Nitrogenous bases
What are the complementary bases?
- Adenine and Thymine
* Cytosine and Guanine
How do DNA replicate?
•DNA synthesis
What are the steps of DNA replication?
1)
2)
3)
4)
What are changes in DNA know as?
•mutations (good/BAD)
What are the only mutations passed on to offspring?
•Those of Egg or Sperm
What is DNA bound by?
•Histones
