What is an example of energy interconversion in cells?
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Cells can convert chemical-bond energy into kinetic energy to drive molecular motor proteins.
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What is an example of energy interconversion in cells?
Cells can convert chemical-bond energy into kinetic energy to drive molecular motor proteins.
How does an animal cell use the energy from food molecules?
It converts the chemical-bond energy into heat energy, which keeps the body warm.
What distinguishes the metabolism of a cell from the wasteful burning of fuel in a fire?
The tight coupling of heat production to an increase in molecular order.
What is an example of potential energy being converted to heat energy?
A raised brick has potential energy due to gravity, which converts to heat energy when it hits the floor.
What happens to the kinetic energy of newly formed water molecules from H2 and O2?
It is spread evenly throughout the surroundings as heat energy.
What does the first law of thermodynamics state?
Energy can be converted from one form to another, but it cannot be created or destroyed.
How do some cells harvest energy from sunlight?
Through photosynthesis, converting sunlight into chemical bonds.
Why can't cells derive benefit from the heat energy they release?
Unless the heat-generating reactions are directly linked to processes that generate molecular order.
