Presence of nutrients is detected using various chemical reagents. Glucose is detected using Benedict's solution, while proteins are tested using the biuret reagent while lipids are tested using ethanol and water. In addition starch is tested using the Lugol's iodine. Therefore, the correct answer is 3 (starch- Lugol's iodine.
Answer:
Chimneys are ventilation channels that guide smoke and other gases that are products of combustion out from a fireplace through the roof of a building. ... The warm air can then leave the house through the chimney through the same process of rising that hot smoke does when wood is being burned.
Explanation:
Answer:
The correct answer is: E) Lymphocytes, cytokines, macrophages.
Explanation:
Given the symptoms and how much time they took to appear, the 14-year-old boy seems to be having delayed-type hypersensitivity (also called Type 4 hypersensitivity), causing a reaction called <u>Contact Dermatitis</u>. Type 4 is the only type of hypersensitivity that does not require the intervening of an antibody to occur as it happens because of hapten-specific T cells that will generate inflammation and the tissue damage that is usually accompanied by it.
Delayed-type hypersensitivity is characterized for happening at least 48 hours after the contact with the antigen, and will involve activated T lymphocytes (specifically CD4+ Th1), which will secrete cytokines (most importantly Interferon Gamma and IL-2) thus attracting macrophages to the tissue to phagocyte the antigen and produce inflammation.
D because the others harm the bird instead of helping