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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...

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 feature...

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 cel...

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 o...

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...