Learning Task 5 A journey into the digestive system The Human Digestive System Use the words to fill in the blanks All animals need to eat to get to live. But in order to use this food, they have to break it down in a process called . And so, all animals have a group of connected organs called the digestive. In humans the process of digestion begins in the where food is into small pieces by the teeth. The helps by moving these pieces around. These pieces are covered by or spit. The saliva makes the food slippery so that it is easier to . It also helps to break down the food. Once the food is swallowed, it passes through the, which is like a gate that sends food into the and air into the lungs. The food travels down the esophagus and into the . Once the food is mixed with and crushed some more. After spending some time in the stomach, the food is sent into the where nutrients are . The helps by producing some digestive juices called bile. Next, the remaining food goes into the where the are absorbed. The remaining food is called and it is pushed into the where it wait’s before leaving the body

Activity two: just lemons, inc. production here's a one-batch sample of just lemons lemonade production. determine the percent yield and amount of leftover ingredients for lemonade production and place your answers in the data chart. hint: complete stoichiometry calculations for each ingredient to determine the theoretical yield. complete a limiting reactant-to-excess reactant calculation for both excess ingredients. water sugar lemon juice lemonade percent yield leftover ingredients 946.36 g 196.86 g 193.37 g 2050.25 g 89% just lemons lemonade recipe equation: 2 water + sugar + lemon juice = 4 lemonade mole conversion factors: 1 mole of water = 1 cup = 236.59 g 1 mole of sugar = 1 cup = 225 g 1 mole of lemon juice = 1 cup = 257.83 g 1 mole of lemonade = 1 cup = 719.42 g show your calculations below. analysis questions 1. based on taste observations only, which ingredients were in excess in the lemonade samples in activity one? in activity one the excess substances for each sample were the water and sugar. 2. based on the data in activity two, which excess ingredients are affecting the taste of the lemonade in the sample batch? 3. what can just lemons, inc. do during production to reduce the amount of excess ingredients and improve the taste of their lemonade? 4. try to reduce the amount of leftover ingredients by changing the amount of one, two, or all three starting ingredients. show your stoichiometric calculations below. 5. during factory inspection, just lemons, inc. discovered that a water valve to the lemonade mixing station was not functioning. once they repair it, more water will enter the mixing station. from what you know about the limiting and excess ingredients for current lemonade production, what advice would you give engineers about the upcoming increase in water?