A student made a model of a eukaryotic cell using the resealable plastic bag shown. She placed a golf ball inside the bag. The bag represents the flexible outermost boundary of a cell. Which part of a cell is most likely represented by the ball?

A-Cytoplasm
B-Nucleus
C-Cell Wall
D-Cell membrane

Which two factors contributed to creating a global culture? the creation of the united nations improvement in telecommunications health issues such as the ebola virus increased opportunities for global travel

What in scientific term why the salty popcorn causes this thirst

Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.