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Explain how formation of an enzyme-substrate complex increases the rate of reaction.

When an enzyme comes into contact with a substrate that fits its active site, it will bind to it and form an enzyme-substrate complex. This binding alters some of the bonds in the substrate to be slightly we...
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What are the key differences between eukaryote and prokaryote cells?

Key Eukaryote cell features: -DNA is circular within the cell nucleus-Larger than prokaryotes-Can be one cell or many-Membrane-bound organelles (e.g. mitochondria, chloroplasts)Key Prokaryote cell features: ...
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Answered by Katy R. • Biology tutor
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How are the lungs specialised for gas exchange?

They have a high surface area to volume ratio allowing for more gas exchange to take place. The large surface area to volume ratio is partially to do with them having lots of alveoli. Alveoli have a 1 cell t...
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Answered by Rebecca L. • Biology tutor
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Why is the oxygen dissociation curve shaped like it is?

At first, the shape of the Hb makes it hard for oxygen to bind to one of the polypeptide subunits so at low concentrations of oxygen, the saturation of oxygen is low too. Once the first molecule of oxygen ha...
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What is meant by the term "tertiary structure" of a protein? Describe the forms of bonding that could be involved.

Tertiary structures in a protein refers to the overall three-dimensional structure of the protein. The tertiary structure is primarily generated by interactions between amino-acid R groups. There are five pr...
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Answered by Henry H. • Biology tutor
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