4.1 Cells Capture and Use Energy Flashcards
What is the first law of thermodynamics?
Energy cannot be created or destroyed but only converted to other forms
What is the second law of thermodynamics?
Every reaction increases entropy and loses heat energy to the environment
What unit is energy measured in?
Calories
What are the two most important forms of energy transportation?
Photosynthesis and cellular respiration
What is cellular respiration?
Process which living cells convert oxygen and glucose to carbon dioxide and water, yielding energy.
Where does cellular respiration take place in the cell?
The Mitochondria
What is the second law of thermodynamics?
All energy transformations lose some energy to the surroundings as heat; entropy always increases.
What is entropy?
Randomness or disorder
Why does the amount of entropy in the universe always increase?
Because in every reaction some energy is lost as heat, and heat is a disordered form of energy?
Heat is what type of form of energy?
Disordered form
Glucose, glycogen, and fat contain potential or kinetic energy?
Potential
Is cell division a form of “work” in a cell?
Yes.
True or false: The amount of energy in the universe is constant
True
