AQA A LEVEL BIOLOGY EXAM. QUESTIONS WITH ANSWERS.

The adult damselfly uses a tracheal system for gas exchange. Explain three ways in which an insect's tracheal system is adapted for efficient gas exchange. (3) Co-Transport (Not mark scheme specific, only here as a guidance) Compare and contrast mitosis and meiosis [Differences Mitosis(4), Meiosis(6)][Similarities (2)] Describe the chemical reactions involved in the conversion of polymers to monomers and monomers to polymers. Give two named examples of polymers and their associated monomers. (5) Describe the roles of micelles in the absorption of fats into the cells lining the ileum (3). Describe the complete digestion of starch by a mammal. (4) Describe the structure and the function of the nucleus. (4) [Structure (3)] [Function(4)]