Which of the following is not a role of ATP synthase? Question 24 options:

ATP synthase assists in the formation of ATP from ADP and a free phosphate group.

ATP synthase facilitates the movement of hydrogen ions from inside the mitochondrial membrane to the outside of the membrane.

ATP synthase acts as a channel protein.

ATP synthase donates an electron to the electron transport chain.

the real answer is b. scintillation counter

oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.