Q) Describe the usefulness of triglycerides in living organisms
Main points | |
Key idea: | Excellent long term energy storage |
· Large no. of H:O ratio (as compared to equal mass of carbohydrate) so provide more ATP when oxidized · Insoluble in water, so does not affect osmotic potential of storage cell · Ref to its usefulness in hibernating animals (e.g. polar bears) + migratory animals/birds where small body mass is needed | |
Key idea: | Good source of metabolic water |
· H atoms of the mol produce H2O upon oxidation · Ref to its usefulness to animals (e.g. camels) that live in desert | |
Key idea: | Good thermal insulator + provides buoyancy |
· Prevents excessive heat loss + less dense than water · Ref to its usefulness to animals (e.g. whale) that live in cold environment + aquatic mammals (e.g. whales and seals) | |
Key idea: | Protection |
· Forms a protective layer for delicate internal organs (e.g. kidney) in animals | |
Comments: (i) Visualize the answer with the aid of a labelled diagram. (ii) Verbalize the answer + write down the main points w/o referring to the answer (use abbreviations) (iii) Read again within the next 24h & once more within 72h (do not spend more than 10min) | |
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