Q: Plane mirrors work because the light rays create what behind the mirror? Read this paragraph and choose the correct option from the provided answers: The sketch below shows how we see an image in a plane mirror. Plane mirrors work because the light rays create a virtual image behind the mirror. Light rays from the object strike the mirror and reflect according to the law of reflection. When some of the light rays enter our eye, our eye and brain interpret these rays as having traveled in a straight line path. Therefore, our eye and brain track the light rays backward to a position from which they appear to have come. At this position, we see an image. Choices: - a mirror image - a entire image - a virtual example - a virtual image A:
a virtual image

Q: Glutathione is a low-molecular-weight compound found in living cells that is produced naturally by what? Read this paragraph and choose the correct option from the provided answers: Glutathione is a low-molecular-weight compound found in living cells that is produced naturally by the liver. Healthcare providers give glutathione intravenously to prevent side effects of chemotherapy and to prevent kidney problems. Choices: - blood - brain - amino acids - liver A:
liver

Q: What is the term for the breakdown of unstable isotopes into stable elements? Read this paragraph and choose the correct option from the provided answers: Radioactive decay is the breakdown of unstable isotopes into stable elements. For example, carbon-14 is an unstable isotope of carbon that decays to the stable element nitrogen-14. The rate of decay of an isotope is measured in half-lives. A half-life is the time it takes for half a given amount of an isotope to decay. Choices: - isotopic decay - radioactive decrease - secondary decay - radioactive decay A:
radioactive decay