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This logbook entry titled "Bean Demo" outlines a two-day experiment to investigate the presence of stored starch and the occurrence of cellular respiration in bean seeds under germination conditions. On Day 1, beans were tested for starch using iodine solution, oxygen using M.B. solution, and CO2 with BtB solution, indicating a negative glucose result. By Day 2, tests repeated show starch presence, oxygen availability, and a positive glucose test, confirming that bean seeds perform cellular respiration and contain starch for energy.
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AFTER QUIZ-MAKE A LOGBOOK ENTRY TITLED “BEAN DEMO” • COPY IN THE FOLLOWING DATA TABLE
ATP Mitochondria H2O O2 CO2 glucose C6H12O6 (starch) Chloroplasts Sun In the network diagram on the left-we see that excess glucose is stored as starch. We also see that starch is converted back to glucose. We know that cellular respiration requires glucose—not starch. How could we get evidence that a bean seed 1) contains stored starch and 2) performs cellular respiration when provided the right conditions (moisture) for germination
DAY 1 Beans in Iodine Solution—testing for starch and glucose Beans in M.B. Solution—testing for oxygen Beans in BtB Solution—testing for CO2 = Bean Seed Glucose test strip—negative test for glucose
DAY 2 Beans in Iodine Solution—testing for starch and glucose Beans in M.B. Solution—testing for oxygen Beans in BtB Solution—testing for CO2 = Bean Seed Glucose test strip—positive test for glucose
