Top answers

Biology
A Level

How can a child have cystic fibrosis when neither of the parents have the disorder? (5 Marks)

• Cystic fibrosis is an autosomal recessive disorder, which is caused by a mutation in the CFTR (cystic fibrosis transmembrane conductance regulator) gene. • The defective CFTR protein does not allow Cl...

Answered by Biology tutor
2707 Views

What does ADH do and how does it work?

Anti-diuretic hormone (ADH) is a hormone produced to help maintain the amount of water in the body when it is dehydrated. Water passes into the Bowman's capsule from the blood in the glomerulus in the nep...

Answered by Lauren B. Biology tutor
4407 Views

What is the structure of DNA?

DNA, or deoxyribonucleic acid, is a polymer made up of two strands of nucleotides. Each nucleotide is made up of a phosphate group, pentose sugar and nitrogenous base (of which there are 4 types). These n...

Answered by Shaurya M. Biology tutor
1587 Views

How does does changing the pH affect the activity of an enzyme?

Enzymes are proteins which increase the rate of reactions by binding to substrates and forming enzyme-substrate (E-S) complexes. The part of the enzyme which binds to the substrate is called the active si...

Answered by Ali A. Biology tutor
8455 Views

Explain the process of aerobic respiration in animals

Aerobic respiration is the production of energy in the presence of oxygen using glucoseThe chemical equation for aerobic respiration is as follows:C6H12O6 + 6O2...

Answered by Joseph D. Biology tutor
1863 Views

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