You are testing for the presence of starch: Iodine dissolved in an aqueous solution of potassium iodide - reacts with starch producing a deep blue-black color. This reaction is the result of the formation of polyiodide chains from the reaction of starch and iodine.
Answer: The answer is A. They regulate blood levels of glucose.
Explanation:
Pancreas: insulin- reduces blood-glucose levels; glucagon- increases blood-glucose levels
Bicarbonate of soda. Aka Baking soda. Baking soda is alkaline and generates CO2 when combined with acid. This CO2 gas is what causes the bread to rise.
Answer: Lymphatic capillaries are dead-end tubes.
Explanation: Lymphatic capillaries are closed tubes with flap-like valves that open to take in tissue fluid. Blood capillaries are part of a continuous system of blood vessels; arterioles supply blood to the capillary bed, and venules drain them.
