Biology, 16.04.2020 00:23 andrewbao999
Rat heart muscle operating aerobically fills more than 90% of its ATP needs by oxidative phosphorylation. Each gram of tissue consumes Oxygen at the rate of 10.0 micromol/min, with glucose as the fuel source.
(a) Calculate the rate at which the heart muscle consumes glucose and produces ATP.
(b) Consider an alternate scenario – what would be the rate of consumption if the energy source were triglycerides whose fatty acyl chains were each 12-C in length and saturated. (assume the same rate of 10.0 micromol/min of oxygen consumption).
(c) For a steady-state concentration of ATP of 5.0 micromol/g of heart muscle tissue, calculate the time required (in seconds) to completely turn over the cellular pool of ATP. What does this result indicate about the need for tight regulation of ATP production? (Note: Concentrations are expressed as micromoles per gram of muscle tissue because the tissue is mostly water.)
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Rat heart muscle operating aerobically fills more than 90% of its ATP needs by oxidative phosphoryla...
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