essay

Question 1

importance of photosynthesis

Answer 1

• complex organic molecules needed for growth
• energy for processes in organism
• oxygen for respiration
• if plant eaten, organic molecules used to provide energy to organisms higher up food chain
• oxygen produced is released into atmosphere and is available for other organisms

Question 2

importance of condensation and hydrolysis reactions

Answer 2

1. Biological molecules: condensation reactions to form ester bonds in lipids. Form phospholipids. Form phospholipid bilayer. Enables selectively permeable cell membranes
   Triglycerides = energy storage
2. Hydrolysis of pathogens - phagocytosis. Phagocyte engulfed = phagosome, + lysosome = phagolysosome, release hydrolytic enzymes Non-specific immune response. Destroy pathogens + preventing infection
3. Condensation reactions digestion: hydrolysis of proteins, name the enzymes etc. then these amino acids can be used in condensation reactions to form proteins, like haemoglobin through protein synthesis = transport oxyhaemoglobin to cells, and antibodies for immune humoral response
   Nutrition, growth, repair, metabolism

Without hydrolysis = nutrients couldn’t be absorbed
Without condensation = macromolecules essential for life can’t be constructed

4. Condensation reactions in protein synthesis
   Transcription, translation
   Life depends on this cycle