Module 13 Flashcards
cellular energetics
Use of energy
grow, divide, move, change shape, pump ions, transport vesicles, and synthesize macromolecules
Cells sources of energy
Sun and chemical compounds (carbs, lipids, and proteins)
Kinetic Energy
Energy of motion
Potential Energy
Stored energy
Chemical Energy
A form of potential energy
Held in chemical bonds between pairs of atoms in a molecule
examples of kinetic energy
Any type of movement
flowing rivers, contracting muscles, running
Heat
Light, electricity, thermal energy
How is light, heat and electricity a form of kinetic energy
it is associated with the movements of photons, electrons, and molecules
When is potential energy released
when an object changes in position or structure
What kind of energy do nonmoving objects have
Potential energy
What are the independent variables of potential energy
gravitational, electrical, and magnetic fields
What kind of energy is harnessed to move another molecule against its concentration gradient in secondary active transport
Potential energy
What can create/ cause potential energy to be stored
Moving a ball back to the top of the stairs or the energy remaining after a ball has reached the bottom of the stairs.
Metabolic Pathway
a series of chemical reactions where molecules are broken down or built up
What happens as larger molecules are broken down down into smaller molecules
cells package the energy that is released into a readily accessible form of energy that is accessible for the cell
ATP
chemical energy between the bonds of the adenosine triphosphate drives many cellular processes
