<span>The only true statement is that cellular respiration is used by every living cell. There are two forms of cellular respiration: aerobic, where oxygen is required, and anaerobic, where it is not. The other statements are false, in that although oxygen and water can be part of the cellular respiration process, they are not expressed in the ways listed. Cellular respiration also does not convert energy to food, it converts food to energy. Hope this answer helps!</span>
C because it is use to detect chromosomal disorders and infection.
Cowpox and Smallpox are very similar diseases. When cowpox is injected into the body in a form of a vaccine, a weakened germ cell of the disease enters the body. Since it is weakened, the body is able to easily fight it off by sending antibodies. After the antibodies kill off the germ cell, B memory cells hold the information of the threat, so if in the future, when the host contracts the virus/disease again, the body is able to counteract it faster than it did the first time around. So since Cowpox and Smallpox are very similar, when a person is first injected with the Cowpox vaccine, the B memory cell remembers information about Cowpox. Then when the host contracts Smallpox, the body sees Smallpox as the same thing as Cowpox, so the body can fight off Smallpox quickly, and thus preventing Smallpox.
