D How does it occur? Tick (ü) the best explanation. ⬜ You breathe out more carbon dioxide than is in the air that you breathe in.
⬜ Small hairs in the lungs push oxygen into the blood and remove carbon dioxide.
⬜ Red blood cells enter the lungs and pump oxygen into them and let carbon dioxide out.
⬜ Particles are always moving, so naturally move into places where there are fewer of them.
⬜ Oxygen particles swim to red blood cells; carbon dioxide particles swim away from them.
I

Imagine you are a student in alfred hershey and martha chase's lab in the late 1940's. you are given five test tubes with the e. coli bacteria that were infected with t2 bacteriophage that have been labeled with 32p or 35s. unfortunately, you forgot to label the tubes and are now uncertain which were 32p labeled and which were 35s labeled. you place the contents of each tube in a blender and pulse it for a few seconds to shear off the protein coats from the bacterial outer membranes. you then centrifuge the contents to seperate the protein coats and the bacterial cells. you then check for radioactivity and obtain the results shown below. which tubes contained e. coli infected with the phage labeled with 32p? select all tubes that apply.