When 10,000 molecules of ATP are hydrolyzed to ADP and i in a test tube, about half as much heat is liberated as when a cell hyd
rolyzes the same amount of ATP. Which of the following is the best explanation for this observation? A. The reaction in cells must be catalyzed by enzymes, but the reaction in a test tube does not need enzymes.
B. Cells are open systems, but a test tube is a closed system.
C. Reactant and product concentrations in the test tube are different from those in the cell.
D. Cells are less efficient at heat production than nonliving systems.
E. The hydrolysis of ATP in a cell produces different chemical products than does the reaction in a test tube.
D. Cells are less efficient at heat production than nonliving systems.
Explanation:
Cells transform a few of the energy of ATP hydrolysis into different kinds of energy apart from heat. This reaction occurs mostly in the body since the body can function as an enclosed space. The energy generated from ATP might not necessary produce more heat.
In most cases, the energy is employed for varying purposes such as in moving, reasoning apeoplend the different everyday activities. Cells are adequately efficient when contrasted against the non-living systems for sure.
C. Reactant and product concentrations in the test tube are different from those in the cell.
Explanation:
Cells convert some of the energy from ATP hydrolysis in to different forms of energy other than heat. ATP energy does not always generate more heat. Many times, energy is used for different purposes.
A hydrosphere is the total amount of water on a planet. The hydrosphere includes water that is on the surface of the planet, underground, and in the air. A planet's hydrosphere can be liquid, vapor, or ice. On Earth, liquid water exists on the surface in the form of oceans, lakes and rivers.
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