>> b. operates at ribosomes sites controlling protein synthesis (Its done via RNA - mRNA)
c. regulates the growth and function of all cells through protein synthesis
d. functions through the chemical codes that it contains in genes
2.Where does transcription of mRNA and the translation of codes into the lanugage of the amino acids occur?
>> Tanscription of mRNA - In the nucleus
>> Translation of codes - On the ribosomes, in the cytoplasm.
3.If a mistake is made, even in one nucleotide, what would you predict would occur in hemoglobin synthesis?
>> A mutation would occur in the new hemoglobin produced. Example - If GAG is changed to GTG, a disease known as sickle cell anaemia occurs.
4. The damage that has occured in xeoderma pigmentosun(xp) individuals is a
a. mutation of DNA in germ-line cells
>> b. mutation of DNA in somatic cells
c. structual damage caused by a teratogen
d. functional damage caused by electophoresis
5. The mistake is repaired properly in normal indiviudlas by
a. mRNA plymerase and DNA primase
>> b. DNA ploymerase and DNA ligase
c. bioremediation and DNA vectors
d. teratogenic physical and chemical agents
6. Children born with XP must have a lifestyle with very specific guidelines. All the following are resonable guidelines for affected children except
a. application of SP+30 sunblock when going outdoors
b. shielding from sunlight when exiting a car to enter school buildings
>> c. participation in "night games" at summer camp
d. wearing a special astronut-like space suit outdoors
7/ The inital cause of a genetic disorder in an affected child likley results from the presence of abnormal
>> a. DNA in cell nuclei
b. rubosomal RNA
c. messenger RNA
d. DNA in cell mitochondria