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Explain the oxygen dissociation curve and the role of Bohr shift.

(1) Oxygen is transported around the body in red blood cells. In the red blood cell it is bound to a protein called haemoglobin. Oxygen dissociation curves show the relationship between oxygen levels (as par...
MC
Answered by Matthew C. • Biology tutor
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What is the probability of offspring (both male and female) being affected by haemophilia if both parents are unaffected?

Haemophilia is a sex-linked genetic recessive disease, meaning it is associated with a gene located on the X chromosome. As males have only one X chromosome, inheriting that chromosome will mean that they wi...
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Answered by Ella B. • Biology tutor
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Compare DNA and RNA

Deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) both encode genetic information; however, there are many fundamental differences. Firstly, the sugar backbone for RNA is ribose, while for DNA its deoxy...
ST
Answered by Sara T. • Biology tutor
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What are the different enzymes involved in replication and what do they do?

There are many enzymes which are crucial for replication. The first is helicase which unwinds the double helix at the replication fork. DNA gyrase then reduces the strain caused by the unwinding of the helix...
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Answered by Hana D. • Biology tutor
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What is the difference between DNA and mRNA

DNA is a double stranded construct of genetic information with nucleotides: Adenine, thymine, guanine, and cytosine. DNA contains deoxyribose. mRNA is a single stranded transcribed version of a DNA sequence ...
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Answered by Alexander T. • Biology tutor
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