Answer the following question given this paragraph: Metals are generally shiny. This is because they reflect much of the light that strikes them. The mercury pictured above is very shiny. Q: What makes metals shiny? Choices: - light characterization - light energy - light expansion - light reflection A:
light reflection
(Question)
Answer the following question given this paragraph: Figure 10.14 The role of normal p53 is to monitor DNA and the supply of oxygen (hypoxia is a condition of reduced oxygen supply). If damage is detected, p53 triggers repair mechanisms. If repairs are unsuccessful, p53 signals apoptosis. A cell with an abnormal p53 protein cannot repair damaged DNA and thus cannot signal apoptosis. Cells with abnormal p53 can become cancerous. (credit: modification of work by Thierry Soussi). Q: Hypoxia is a condition of the reduced supply of what? Choices: - methane - food - nitrogen - oxygen A:
(Answer)
oxygen
Ques: Answer the following question given this paragraph: In myopia, the eye is too long. Below, you can see how images are focused on the retina of someone with myopia ( Figure below ). Myopia is corrected with a concave lens, which curves inward like the inside of a bowl. The lens changes the focus, so images fall on the retina as they should. Q: What vision defect occurs because the eye is too long? Choices: - hyperopia - blindness - astigmatism - myopia A:
Ans: myopia
(Q).
Answer the following question given this paragraph: Epilepsy is a disease that causes seizures. A seizure is a period of lost consciousness that may include violent muscle contractions. It is caused by abnormal electrical activity in the brain. The cause of epilepsy may be an infection, a brain injury, or a tumor. The seizures of epilepsy can often be controlled with medicine. There is no known cure for the disease, but children with epilepsy may outgrow it by adulthood. Q: What type of activity in the brain causes epilepsy? Choices: - hormone imbalance - toxic overload - bleeding - abnormal electrical activity A:
(A).
abnormal electrical activity
Ques:Answer the following question given this paragraph: Many transition metals and their compounds are used as catalysts. Given MnO 2, FeCl3, Pt, and Ni, which would you select for each purpose and why?. Q: Many transition metals and their compounds are used as what? Choices: - insulators - bases - sealants - catalysts A:

Ans:catalysts
Ques: Answer the following question given this paragraph: One reason radiation is dangerous is that it can't be detected with the senses. You normally can't see it, smell it, hear it, or feel it. Fortunately, there are devices such as Geiger counters that can detect radiation. A Geiger counter, like the one in Figure below , has a tube that contains atoms of a gas. If radiation enters the tube, it turns gas atoms to ions that carry electric current. The current causes the Geiger counter to click. The faster the clicks occur, the higher the level of radiation. You can see a video about the Geiger counter and how it was invented at the URL below. Q: Geiger counters can be used to detect what, in general? Choices: - seismic load - convection - evaporation - radiation A:
Ans:
radiation