| Front | Describe and explain two features of starch that make it a good storage molecule. (2 marks) |
|---|---|
| Back | Any two from: 1. Insoluble (in water), so doesn't affect water potential; 2. Branched / coiled / (α-)helix, so makes molecule compact; OR Branched / coiled / (α-)helix so can fit many (molecules) in small area; 3. Polymer of (α-)glucose so provides glucose for respiration; 4. Branched / more ends for fast breakdown / enzyme action; 5. Large (molecule), so can't cross the cell membrane |
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Starch molecule cellulose formed explain difference structure marks
Previous card: Cellulose glycogen molecule made straight chain glycosidic describe
Up to card list: AQA Biology Flashcards