22285389
Descrição
FlashCards por Evian Chai, atualizado more than 1 year ago
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Criado por Evian Chai
mais de 4 anos atrás
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| Questão | Responda |
| What are 4 properties of genetic material? | 1. Replication 2. Storage of information 3. Expression of information 4. Variation by mutation |
| What are the three parts of a nucleotide? | 1. Nitrogenous base (Purine/Pyrimidine) 2. Pentose Sugar 3. 1/2/3 Phosphates |
| Which three nitrogenous bases are pyrimidines? | Uracil (U) Thymine (T) Cytosine (C) |
| Which two nitrogenous bases are purines? | 1. Adenine (A) 2. Guanine (G) |
| What is the difference in structures between pyrimidines and purines? | Pyrimidines have one ring, while purines (A/G) have two rings connected |
| On a sugar, which carbon does the base pair connect to? Which carbon does the phosphate connect to? | 1. C1 connects sugar and base pair 2. C5 connects phosphate and sugar |
| Base+ Sugar=nucleoside Base+ sugar + phosphate= .... Base+ sugar + 2x phosphate=... Base+ sugar + 3x phosphate=... | Nucleoside monophosphate Nuceloside diphosphate Nucleoside triphosphate |
| Why is DNA replicated in the 5'-3' direction? | Because each base nucleotide is attached via its sugar (On C5) to the C3 of the nucleotide above it |
| What bond links sugar and phosphate groups together? | 5'-3' Phosphodiester bonds |
| DNA is a ...handed helix with ... nucleotides per turn | Right 10 |
| What is the bonding between bases? | Hydrogen bonding |
| What can lead to denaturation of DNA? | 1. Heat - Tm is temp where 1/2 of DNA is lost - G-C regions denature at higher temp 2. Chemicals |
| Of the following, which is the only form of DNA that is left handed: A, B, Z | Z Form |
| Where is DNA located? | Nucleus/mitochondria of eukaryote cell Cytoplasm in bacteria Nucleus+chloroplast in plants |
| Eukaryotes have ...dsDNA while prokaryotes have ...dsDNA (shape) How are eukaryotic/prokaryotic proteins bonded to protein differently? | 1. Long, linear 2. Singel circular, supercoiled 3. Eukaryotes are bonded to proteins to form chromatins, prokaryotes are packaged IN protein to form nucleoids (also have plasmids) |
| What is a genome? | Entire set of genes in an organisms chromosome (can be DNA or RNA) |
| What is the ratio of purines to pyrimidines? | 1:1 |
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