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Cystic Fibrosis (CF) is a recessively inherited disorder. A father is a suffer of CF, while the mother is normal and not a carrier. What is the chance their child will be a carrier of CF? Give your answer as a percentage.

First write a key for the alleles. (normal Allele=T. CF allele=t) If the mother is normal= TT Father is a suffer =tt. Then Draw a punnet diagram for the child Write a key for the punnet diagram. TT-normal. T...
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Answered by Natasha I. • Biology tutor
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Give the full balanced symbol and word equation for aerobic respiration

glucose + oxygen --> energy + carbon dioxide + water C6H12O6 + 6O2 ---> energy + 6CO2 + 6H20
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Answered by Justine V. • Biology tutor
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Explain how bacteria can become resistant to antibiotics.

Sometimes, a chance mutation in bacterial DNA allows certain bacteria to become resistant to certain types of antibiotic. When an antibiotic is given, only the non-resistant strains of bacteria will be kille...
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Answered by Rachel A. • Biology tutor
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What components is blood made up of?

Blood is primarily used to transport cells and different substances around the body. It can be divided into 4 categories of components: the blood plasma, trombocytes (platelets), leukocutes (white blood cell...
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Answered by Anatol G. • Biology tutor
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Bacteria can become resistant to antibiotics, how can doctors reduce the number of resistant bacteria? (2 marks)

This is a two mark question so we need two points. Firstly doctors should only prescribe antibiotics for a confirmed bacterial infection, antibiotics won't work on viruses and if given may allow commensal ba...
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Answered by Sophie R. • Biology tutor
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