11. Two molecules, A and B, and their distribution inside and outside of a cell are represented in the diagram below. State one possible reason why molecule A could diffuse across the membrane of the cell but molecule B could not. [1]

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)