A squirrel running up a tree and sitting on a branch shows what kind of energy conversion?
A. Chemical potential energy converting to kinetic energy
B. Gravitational potential energy converting to heat energy
C. Heat energy converting to kinetic energy
D. Kinetic energy converting to gravitational potential energy

D. Kinetic energy converting to gravitational potential energy.

APEX

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".