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B1 Revision
| Question | Answer |
|---|---|
| what is a false positive | when the results say that you have the illness and you do not |
| What does homozygous mean? | Alleles the same |
| What does hetrozgous mean? | Alleles different |
| Is Cystic fibrosis dominant or recessive? | Recessive |
| Is huntingdons disease dominant or recessive? | Dominant |
| What does homestatis mean? | Maintaining a constant body temperature. |
| What is an ethical issue of IVF | Playing god |
| what are the two types of screening foetus? | chronic villus amniocentisis |
| what is a false negative | when the results say you do not have the illness and you do |
| how many chromosomes do you have | 46- 23 male 23 female |
| two types of proteins? | Structural and functional |
| what is the sex determining gene and what does it do | Y triggers testes |
| example of natural clone | identical twins |
| example of artificial clone | dolly the sheep |
| what do proteins do? | move muscles. help growth. |
| why may you need to tell insurance about screened illness? | it may be difficult to find an insurance |
| what is infection | something that spreads |
| what are micro organisms measured in? | nanometers |
| what do white blood cells do? | engulf harmful antibodies |
| what is in vaccination? | dead or weakened illness |
| what is a double blind trial? | neither the doctor or patient know if they have the drug or placebo |
| what is a blind trial? | the doctor knows if it is the drug or the placebo but the patient doesn't |
| what is a open trial | both patient and doctor know if it is the drug or placebo |
| what does the nitrogen cycle start with? | nitrogen fixation |
| what does the carbon cycle start with? | co2 in atmosphere |
| what is a punnet square | shows chance of illness |