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AICE Biology
Genetic control
| Question | Answer |
|---|---|
| What are the 4 nitrogen containing bases of DNA | Thymine, Cytosine, Adenine, Guanine |
| What are the 4 nitrogen containing bases of RNA | Adenine, Cytosine, Guanine, Uracil |
| Pentose sugar in DNA | deoxyribose |
| Pentose sugar in RNA | Ribose |
| What bonds hold 2 sides of DNA together | Hydrogen bonds |
| 2 purine bases | Adenine and Guanine |
| 2 pyrimidine bases | Cytosine and Thymine |
| Difference between structure purine and pyrimidine | purines have two rings pyrimidines have one ring |
| Complementary base pairing | nucleotide bases linked by hydrogen bonds on opposite strands of DNA Guanine CB is Cytosine and Adenine CB is Thymine. |
| DNA form of strand | Double |
| RNA form of strand | Single |
| Replication occurs | nucleus of eukoryotes and cytoplasm of prokoryote |
| Transcription occurs | nucleus unless mRNA is produced in cytoplasm |
| Translation occurs | mRNA is produced in cytoplasm, ribosome. |
| Messenger RNA function mRNA | passes information from DNA to the ribosome, sequence of products of gene expression |
| Transfer RNA function tRNA | physical link between mRNA and amino acid sequence of protein |
| Ribosomal RNA function rRNA | The predominant material within the ribosome |
| condon | 3 base sequence (3 nitrogen bases in a row) on RNA |
| anticondon | 3 base sequence on tRNA |
| how many amino acids are in most organisms | 20 |