AS Biology PAPER 1 -2017 Certification Review Exam Questions And Answers Latest Update.
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Grado
AZT
Institución
AZT
suggest and explain why AZT does not destroy HIV in the body but stops or slows down the development of AIDS ? - correct answer > Person infected with HIV has HIV DNA
>New HIV particles can still be made
>AZT inhibits reverse transcriptase ...
suggest and explain why AZT does not destroy HIV in the body but stops or slows down the
development of AIDS ? - correct answer > Person infected with HIV has HIV
DNA
>New HIV particles can still be made
>AZT inhibits reverse transcriptase
> This therefore stops the new HIV particles from forming new HIV DNA
advantages of using HAART ? - correct answer slows down the development of
AIDS -HIV resistant to AZT is damaged (by HAART )therefore stopping replication
AZT works as a drug -therefore HAART prevents the spread of AZT resistant HIV from spreading to the
rest of the population .
suggest why high doses of AZT lead to muscle wastage ? - correct answer
fewer mitochondria -therefore less aerobic respiration
Muscles receives less ATP
result for a chip to be places in 0.8 mold dm3 sucrose solution ? - correct answer
sucrose solution is placed in a hypertonic solution
therefore by osmosis water molecules move from inside the chip to outside the chip
chip will weigh less
name a method a student would have used to produce these sucrose solutions ? - correct answer
Dilution series
Function of mitchondria - correct answer ATP is made
exercise programe on mitochondria ? - correct answer no difference to
mitochondria
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