(Q).
Answer the following question given this paragraph: An example of this process occurs in the kidney. Glucose, water, salts, ions, and amino acids needed by the body are filtered in one part of the kidney. This filtrate, which includes glucose, is then reabsorbed in another part of the kidney. Because there are only a finite number of carrier proteins for glucose, if more glucose is present than the proteins can handle, the excess is not transported and it is excreted from the body in the urine. In a diabetic individual, this is described as "spilling glucose into the urine. " A different group of carrier proteins called glucose transport proteins, or GLUTs, are involved in transporting glucose and other hexose sugars through plasma membranes within the body. Channel and carrier proteins transport material at different rates. Channel proteins transport much more quickly than do carrier proteins. Channel proteins facilitate diffusion at a rate of tens of millions of molecules per second, whereas carrier proteins work at a rate of a thousand to a million molecules per second. Q: What happens when more glucose is present than the proteins can handle, in the body? Choices: - cultured as urine - metamorphosed as urine - forms urine - excreted as urine A:
(A).
excreted as urine

(Q).
Answer the following question given this paragraph: Punta Arenas, Chile is the world's most southern city. At such a high latitude, winters are exceedingly cold and dark. Unlike the children pictured above, the children in Punta Arenas must stay inside to avoid the cold. Of course, they look forward to spring when they can go out to play. But some years, it is too dangerous for the children to go outside. The ozone hole has moved north. Too much of the Sun's harmful UV radiation gets through. Q: In some parts of the world, too much of the sun's harmful uv radiation gets through because of a hole in what layer? Choices: - mesosphere - troposphere - thermosphere - ozone A:
(A).
ozone

(Q).
Answer the following question given this paragraph: All living things need energy. They need it to power the processes of life. For example, it takes energy to grow. It also takes energy to produce offspring. In fact, it takes energy just to stay alive. Remember that energy can't be created or destroyed. It can only change form. Energy changes form as it moves through ecosystems. Q: Energy cannot be created or destroyed - it can only change what? Choices: - kind - fluid - shape - form A:
(A).
form