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Biconcave discs- to increase surface area for oxygen carriage Haemoglobin- increases affinity for oxygen uptake at the lungs. However, at the respiring tissues, the increased CO2 concentration allow relea...

Osmosis is the movement of water across a semi-permeable membrane

Aerobic respiration uses oxygen/O2 while anaerobic respiration doesn't use oxygen.Aerobic respiration produces carbon dioxide/CO2 as a waste product while anaerobic respiration doesn't (it produces lactic...

Degenerate genetic coding means that although there are 64 different codons, there are only 21 amino acids, meaning that there are multiple codons which code for one single amino acid. The advantage for t...

[Hints given to student: (1) Bread contains starch, and (2) saliva mixes with your food when you are chewing].ANSWER: Bread contains the carbohydrate called 'starch', a molecule consistin...