click below
click below
Normal Size Small Size show me how
DNA, RNA
| Question | Answer |
|---|---|
| in 1953 Watson and crick built a model of DNA. What shape was their model of DNA? | double helix |
| deoxyribonucleic acid is named after which component of nucleotide? | deoxyribose sugar |
| what are the primary functions of DNA | store genetic energy and transmit it to the next generation |
| DNA is a polymer made up of repeating units of nucleotides. What three parts made a nucleotide? | phosphate sugar, carbon sugar, nitrogenous base |
| which enzyme unwinds the double helix? | topoisomerase |
| which enzyme unzips it? | helicase |
| which enzyme is responsible for adding nucleotides and building the new DNA strands? | DNA polymerase |
| which enzyme is responsible for bonding the sugar phosphates of the DNA double helix during replication | DNA Ligase |
| what does Chargaff's rule, or the base pairing rules, state about the structure of DNA | A pairs with T, C with G. |
| in the model of DNA, what molecules make up the rungs of the ladder? | nitrogen bases |
| In the DNA model what molecules make up the sides of the DNA ladder | Sugar and Phosphate Molecules |
| which scientist used X-rays to photograph DNA and used "photo 51" to show DNA had a helix shape? | Rosalind Franklin |
| where in the cell does the process of translation take place? | cytoplasm |
| which molecules transport amino acids to the ribosomes to be used to build proteins? | tRNA |
| which molecule, built during the process of transcription, carries the DNA message to the ribosome? | mRNA |
| how many nitrogen bases make up an mRNA codon? | 3 |
| which nitrogen bases in DNA are pyrimidines? | cytosine and thymine |
| where in the DNA can the genetic code be found? | in the sequence of nitrogen bases in DNA |
| what holds the purines and pyrimidines together in DNA? | hydrogen bonds |
| the process of transcription occurs in which part of the cell? | nucleus |
| state 3 differences between DNA and RNA | DNA has deoxyribose and RNA has ribose. DNA has thymine and RNA has uracil. DNA is double-stranded and RNA is single stranded |
| what does the central dogma of molecular biology state? | DNA -> RNA -> Protein |