click below
click below
Normal Size Small Size show me how
Biology ch. 10
| Question | Answer |
|---|---|
| shape of DNA | Double Helix |
| DNA | Deoxyribonucleic acid |
| three parts of Nucleotides | sugar, base, phosphate |
| four bases | Adenine(A), Guanine(G), Cytosine(C), Thymine(T) |
| compliments to each base | C-G and T-A |
| What did Watson and Crick receive in 1962? | Nobel Prize in medicine |
| Genetics | genetics is the study of heredity and how traits pass parent to offspring |
| DNA is made of what? | 2 chains of Nucleotides |
| Heredity | Passing of traits, parent to offspring |
| Trait | genetically determined variant of a characteristic |
| chains of nucleotides are separated by... | enzymes called helicases |
| DNA polymerase | bind separated chains of DNA |
| Accuracy and repair | one error in every 10,000 |
| proofreading | brings error rate down to one in every one billion nucleotides. |
| mutations | occur in a change of the nucleotide sequence |
| sugar in DNA | deoxyribose |
| purines | Adenine and guanine |
| pyridines | Cytosine and Thymine |
| after polymerase | 2 new copies of the original DNA are created |
| RNA | ribonucleic aid |
| Structure of RNA | Sugar(ribose), Phosphate, nitrogen(containing base) |
| differs from DNA and RNA | sugar is ribose, phosphate, nitrogen containing base |
| transcription | process where info. is copied from RNA to DNA |
| protein synthesis | production of proteins |
| types of RNA | mRNA, tRNA, rRNA |
| mRNA | `messenger RNA |
| Transfer RNA | tRNA |
| rRNA | ribosomal RNA |
| genetic code | a correlation between nucleotide sequence and an amino acid sequence |
| ribosomes | composed of rRNA and proteins and are free in the cytoplasm and attached to the endoplasmic reticulum. |