Which statement most correctly describes the role of a connecting protein? a. it creates a channel between the two layers of the bilayer membrane b. it serves as a link between membrane proteins on adjacent membranes. c. it connects the carbohydrate tag with the correct cell response. d. it attaches to the membrane, providing a matrix of support.

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.