A: calcium
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Describe how peristalsis causes food to be moved along the alimentary canal.
Explain the health risks of each of the following: (i) a high-fat diet
Which process involves the use of nutrients inside cells?
Which organelles are found in both animal and plant cells? 1 cell membrane 2 cell wall 3 nucleus 4 sap vacuole
Amylase solution is tested with Benedict's solution, biuret solution and iodine solution. Which colours are obtained?
What is correct for the formation of urea?