Which statement most correctly describes the role of a carrier protein?

a. it attaches to the membrane, providing a matrix of support.
b. it aids in reactions of molecules both inside and outside.
c. it has a binding site for a particular molecule.
d. it creates a passageway for passive transport

What are charcteristics of lithosphere?

At which location in earth’s interior does the top density continue to increase as thickness decreases?

One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing