a) A human nerve cell with an average surface area of 250,000micrometers squared has an extracellular potassium ion concentration of 3mM and an intracellular potassium concentration of 90mM. An impulse causes the potassium channels to open and the ions start to flow out of the cell. At what rate do […]

A box of 350N weight is at rest at the bottom of the plank thatis 6.0m long and rises 30 degree above the ground. Then the box is pushed up an inclined plank. If the incline is frictionless, and the pushing force is 600 to do the job, what is […]

1.Please review the following link: http://www.ted.com/talks/lang/en/dan_pink_on_motivation.htmland comment on it. In the lecture we learned that “Behavioral control is gaining support as many organizations seek to align the entire organization to deliver coherent, coordinated strategies.” How is behavioral control impacted by motivational approaches such as the one in the video? What motivational […]

1. In humans, sickle-cell anemia is an example of co-dominance, when considered at the molecular level. People who are homozygous dominant produce all normal-shaped hemoglobin molecules. Hemoglobin is a protein found in red blood cells that carries oxygen. People who are homozygous recessive produce all abnormally-shaped hemoglobin, which cannot carry oxygen very well. […]