Answer the following question given this paragraph: Q: What surrounds the lungs in a thoracic cavity? Choices: - calcium - single membrane - water - double membrane A:
double membrane
(Question)
Answer the following question given this paragraph: Chemistry in Everyday Life Culinary Aspects of Chemistry Cooking is essentially synthetic chemistry that happens to be safe to eat. There are a number of examples of acid-base chemistry in the culinary world. One example is the use of baking soda, or sodium bicarbonate in baking. NaHCO3 is a base. When it reacts with an acid such as lemon juice, buttermilk, or sour cream in a batter, bubbles of carbon dioxide gas are formed from decomposition of the resulting carbonic acid, and the batter "rises. " Baking powder is a combination of sodium bicarbonate, and one or more acid salts that react when the two chemicals come in contact with water in the batter. Many people like to put lemon juice or vinegar, both of which are acids, on cooked fish (Figure 14.15). It turns out that fish have volatile amines (bases) in their systems, which are neutralized by the acids to yield involatile ammonium salts. This reduces the odor of the fish, and also adds a "sour" taste that we seem to enjoy. Q: Why does the fish odour diminish when you put lemon juice over cooked fish? Choices: - due to oxidation - due to evaporation - due to acidification - due to neutralization A:
(Answer)
due to neutralization
Ques: Answer the following question given this paragraph: Pressure and temperature are directly proportional at a constant volume. Q: Pressure and ________ are directly proportional at a constant volume? Choices: - heating - precipitation - speed - temperature A:
Ans: temperature
(Q).
Answer the following question given this paragraph: Composite volcanoes usually have craters on the top. Why are the craters sometimes "U" or horseshoe-shaped?. Q: A crater can usually be found on the top of what kind of volcanoes? Choices: - Shield - Dome - Compound - composite A:
(A).
composite
Ques:Answer the following question given this paragraph: Scientists do the same thing when they classify , or put into categories, living things. Scientists classify organisms not only by their physical features, but also by how closely related they are. Lions and tigers look like each other more than they look like bears, but are lions and tigers related? Evolutionarily speaking, yes. Evolution is the change in a species over time. Lions and tigers both evolved from a common ancestor. So it turns out that the two cats are actually more closely related to each other than to bears. How an organism looks and how it is related to other organisms determines how it is classified. Q: What is the change in a species over time? Choices: - variation - phenomenon - transformation - evolution A:

Ans:evolution
Answer the following question given this paragraph: There are 20 amino acids that make up proteins. With three bases per codon, there are 64 possible codons. This is more than enough to code for the 20 amino acids plus start and stop signals. You can see how to translate the genetic code in Figure below . Start at the center of the chart for the first base of each three-base codon. Then work your way out from the center for the second and third bases. Q: How many different amino acids make up proteins. Choices: - 14 - 25 - 30 - 20 A:
20