Cholera toxin exerts its effect on epithelial cells in the intestinal lumen by:  

How many H+ will be pumped and how many ATP molecules will be produced if 4 molecules of FADH2 and 4 molecules of NADH donated their high-energy electrons to the mitochondrial electron transport chain?  

How many high energy compounds are produced when 3 pyruvates enter the krebs cycle?  

In the situation shown below,

A 7.37 kg block is given an initial velocity of 5.35 m/s up a slope inclined at 13.7° to the horizontal. If the coefficient of kinetic friction between the block and the inclined plane is 0.237 and the coefficient of static friction is 0.317, calculate how far the block slides up the slope before it stops.

A certain grade of diesel fuel has an energy density of 43.1 MJ/kg and a mass density of 850 kg/m3. If this fuel is used to feed an electrical generator with an output of 275 kW and an overall efficiency of 33.5%, how many gallons should the fuel tank contain in order to run the generator for 2 continuous weeks? 

Solve.The population of a particular country was 26 million in 1980; in 1993, it was 31 million. The exponential growth function describes the population of this country t years after 1980. Use the fact that 13 years after 1980 the population increased by 5 million to find k to three decimal places.

Find the zeros of the polynomial function.f(x) = x3 + 6×2 – x – 6

Solve the problem.A rancher has 2400 feet of fencing to enclose a rectangular pig pen. However, one side of the pen lies along a river and requires no fencing. Express the area of the pen, A, as a function of x.

Aseptic technique is used because microorganisms are _____.