Answer the following question given this paragraph: Myopia is commonly called nearsightedness. People with myopia can see nearby objects clearly, but distant objects appear blurry. Myopia occurs when images focus in front of the retina because the eyeball is too long. This vision problem can be corrected with concave lenses, which curve inward. The lenses focus images correctly on the retina. Q: Myopia is commonly called what? Choices: - farsightedness - blindness - scoliosis - nearsightedness A:
nearsightedness
(Question)
Answer the following question given this paragraph: A carrier protein is a transport protein that is specific for an ion, molecule, or group of substances. Carrier proteins "carry" the ion or molecule across the membrane by changing shape after the binding of the ion or molecule. Carrier proteins are involved in passive and active transport. A model of a channel protein and carrier proteins is shown in Figure below . Q: Where do carrier proteins carry ions or molecules? Choices: - between nuclei - across isotopes - back to nucleus - across the membrane A:
(Answer)
across the membrane
Ques: Answer the following question given this paragraph: Humans have been making and using magnifying lenses for thousands of years. The first telescope was built by Galileo in 1608. His telescope used two lenses to make distant objects appear both nearer and larger. Q: Who built the first telescope? Choices: - newton - brahe - copernicus - galileo A:
Ans: galileo
(Q).
Answer the following question given this paragraph: What is one of the most important characteristics of a referee? A referee must be neutral. He can't favor one team over the other. In chemistry, being neutral means not being an acid or a base. Pure water is an example of a neutral substance. In some chemical reactions, an acid and a base combine to form neutral products, including water. You'll see how this happens when you read this article. Q: What do you call a substance that is not an acid or a base? Choices: - equivalent - toxic - oxidic - neutral A:
(A).
neutral
Ques:Answer the following question given this paragraph: For the first year after birth, a baby is called an infant . Childhood begins at age two and continues until adolescence. Adolescence is the last stage of life before adulthood. Q: What is the term for the last stage of life before adulthood? Choices: - old age - pre-pubescence - childhood - adolescence A:

Ans:adolescence
Answer the following question given this paragraph: a reductant or an oxidant; it is also a Lewis base. The other reactant (Cl2) is an oxidant, so we expect a redox reaction to occur in which the carbon of CO is further oxidized. Because Cl2 is a two-electron oxidant and the carbon atom of CO can be oxidized by two electrons to the +4 oxidation state, the product is phosgene (Cl2C=O). Unlike Cl2, BF3 is not a good oxidant, even though it contains boron in its highest oxidation state (+3). Nor can BF3 behave like a reductant. Like any other species with only six valence electrons, however, it is certainly a Lewis acid. Hence an acidbase reaction is the most likely alternative, especially because we know that CO can use the lone pair of electrons on carbon to act as a Lewis base. The most probable reaction is therefore the formation of a Lewis acidbase adduct. Typically, both reactants behave like reductants. Unless one of them can also behave like an oxidant, no reaction will occur. We know that Sr is an active metal because it lies far to the left in the periodic table and that it is more electropositive than carbon. Carbon is a nonmetal with a significantly higher electronegativity; it is therefore more likely to accept electrons in a redox reaction. We conclude, therefore, that Sr will be oxidized, and C will be reduced. Carbon forms ionic carbides with active metals, so the reaction will produce a species formally containing either C4 or C22. Those that contain C4 usually involve small, highly charged metal ions, so Sr2+ will produce the acetylide (SrC2) instead. Exercise. Q: Carbon is a nonmetal with a significantly higher electronegativity; it is therefore more likely to accept electrons in what kind of reaction? Choices: - reversable reaction - catalyst reaction - isotope reaction - redox reaction A:
redox reaction