People have been known to do things to increase the amount of hemoglobin, the oxygen transport molecule, in their bloodstream. From a cell's point of view, what would be the advantage of increased oxygen levels during intense exercise?

The transport of a certain molecule exhibits the following characteristics: (1) The molecule moves down its concentration gradient; (2) at concentrations above a given level, there is no increase in the rate of transport; and (3) cellular energy is not required for transport to occur. Which type of transport process is at work?

Which of the following is incorrect about membrane transport systems? a.   Glucose transport in red blood cells is a uniport system   b.   The Na+/K+ ATPase is an antiport system   c.   The H+/K+ ATPase is an active transport system   d.   The chloride-bicarbonate exchanger in erythrocytes is a uniport system

A student looked at the results and concluded that a decrease in PH does cause a decrease in the force of muscle contraction. Use figure 3 to evaluate this conclusion.

Whether in a gas, a liquid, or a semisolid, diffusion always occurs a). at the same rate. b). from high to low solute concentration. c). faster at lower temperaturesd). from low to high solute concentration.

How is Co2 transporter in the body and write the equation that demonstrates this ?

When you exercise, your muscles are using ATP to do the movements. Thus, the cell is doing cellular respiration in order to replace the ATP it has used. A) Draw a series of diagrams showing the energy transfers that occur during exercise (include: ATP, muscle, heat, cell respiration, glucose). B) When we exercise, we produce a lot of heat, to cool us down, our body produces sweat. According to the laws of thermodynamics, where is the heat coming from? C) When we exercise to lose weight, where is that mass going (do we sweat it out, it turns into heat, becomes digestive waste, how do we eliminate it?)?