Answer Happy

Which of the following is TRUE about phospholipids? Select one: a. Micelle is used as medium to deliver drugs and cosmetics through the skin. O b. Cholesterol and sphingolipids are phospholipids. 0 с. Liposomes is important in digestion and absorption of fats in the digestive tract. O d. Phospholipids are the major lipid membrane while phospholipid bilayer is the major type of phospholipids. Oe. The polar end of the phospholipid is hydrophobic.
Which of the following does NOT require assisted means to cross the cell membrane? Select one: O a hydrophobic b. water 0 с. urea O d. glucose Oe. Nat O f. O g. Oh. a, b and c a, b, c and d all of the above
Hot flashes is only transient and it is the result of a decrease in estrogen which decreases the body temperature. The surroundings would feel hot. Fever is the result of exogenous pyrogens that attack host cells in the body to secrete endogenous pyrogens (cytokines like interleukins 1 and 6). The endogenous pyrogens will trigger the hypothalamus to release prostaglandins E. to raise the body temperature. The surroundings would feel cold. Both responses are example of a positive feedback. Select one: O a. True O b. False
Which of the following statements best described an intrinsic or local control system? Select one: a. Cells at a distant site control the response. O b. Nearby cell or group of cells senses the changes within the vicinity and responds, usually by releasing a chemical. Nearby cells that detect the changes will secrete chemicals to the blood to transport the signals to the brain. O d. Nearby cells that detect the changes will activate an input signal, like a neuron, to carry the signals to the brain.