Give brief explanations: 1. Briefly explain the reason why ions such as Na+, K+, and Ca2+ diffuse across plasma membranes more rapidly than would be expected across a lipid membrane. Why glucose does not cross the cell membrane through open channels? 2. Why do steroid hormones not require signal transduction […]

1. Fourteen year old Donna has just decided that eating meat is “gross” and that she will be a vegetarian. What difficulties are there with such a diet; that is, what nutrients may be lacking? How may they be obtained? 2. Studies with animals have shown that caloric restriction may […]

In an expirement, DCPIP (which interupts electron transport to the thylakoid ETC, becuase it can accept electrons fro PQ) was added to chlorophyll in cuvettes and placed at various distances from a light bulb. As a cuvette was placed closer the lightbulb, its calatytic rate increased up to from 60 […]

1 Orotic aciduria (increased synthesis of orate) can occur due to a defect in the urea cycle and a defect in: Pyrimide Ketogenesis Purine Beta oxidation   2 A male infant who appeared normal at birth began to develop lethargy, hypothermia and apnea at 42 hours after delivery. The infant […]