Inside the lungs, gases move into and out of the blood through the . (Hint: this is where the magic of oxygen exchange takes place!) Group of answer choices

A. alveoli

B. bronchi

C. diaphragm

D. trachea

Providing immunity by injecting the body with a weakened form a pathogen is known as

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.

2points what do bacteria have in common with the cells of other living organisms?