| Term | Definition |
|---|
| What is DNA? | 1. Master copy of organisms infomation 2. Found in the chromosomes 3. controles all activities in cell 4. Every cell has DNA |
| Who was involved in history of DNA? | 1. Rosalind Franklin discovered the DNA molecule was a strand of molecules in spiral form. ** Double Helix**2. Watson & Crick created DNA model. |
| Describe DNA model. | 1. Two twisted strands of sugar & phosphate "rails" with nitrogen base "stairs". |
| What are nitrogen bases? | Adenine = A Guanine = G thymine = T Cylosine = C A pairs with T and C pairs with G |
| Why does DNA need to replicate? | DNA needs to relicate because of the process of MITOSIS |
| What are the 3 steps of replication? | 1. STRANDS of DNA seperate into single strands 2.Nitrogen bases pair up to make a new double strand. 3. Sugar Phosphate "handrails" form sides to make the new DNA double helix. |
| What are genes? | 1. Found in chromosomes 2. make proteins |
| What is the function of genes? | They make proteins. |
| What is RNA? | 1. CODE from the nucleus to the ribosome THAT MAKES A PROTEIN 2. single stranded 3. ribase sugar 4. Uraal base instead of Thymine (ribsome can't read T's) |
| What is MRNA? | MESSENGER from the nucleus TO the RIBOSOME to make a protein. |
| What is ERNA? | TRANSFERS the amino acids (code) from the cytoplasm to the ribosome to MAKE A PROTEIN. |
| What is the process of Protein synthesis? | 1.MRNA messanger moves from nucleus to ribsome 2. ERNA picks up amino acids & takes them to ribsosome 3. ERNA matches to MRNA to make protein. |
| What are mutations? | ANY CHANGE in the A C T G sequence. |
| What are the consequences of mutations? | GOOD- add variety to a species; may help it to reporduce and survive BUD - species may not survive NEUTRAL - no change that is noticible |
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