Question

What are examples of molecules (related to breathing that move by simple diffusion right through the membrane) 1. _____ Goes from higher concentration outside the cell into the cell; whereas 2. _______ moves from higher concentration inside the cell to outside to be exhaled by our lungs.

Answer 1

1. oxygen

2. carbon dioxide

Step-by-step explanation:

oxygen diffuses from the environment(high) to the cells(low) whereas carbon dioxide diffuses from the cells(high) to the environment(low).