The relationship of structure to function in animal and plant cells
The shape and bonding of a polysaccharide directly determines what job it does in a cell. Glycogen and starch store energy; cellulose builds rigid plant cell walls.
Real World
Type 2 diabetes disrupts the conversion of blood glucose into glycogen in liver cells — glycogen's branched structure normally allows rapid release of glucose because many free ends can be broken down simultaneously.
Exam Focus
Link structural feature directly to function in one sentence (e.g. 'branching → many free ends → rapid glucose release') — examiners reward explicit cause-and-effect.
Evaluation Scaffold
A four-step framework for high-quality evaluation. Use this for 'assess', 'evaluate', and 'to what extent' questions.
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