Answer the following question given this paragraph: Lipids are organic compounds that consist of carbon, hydrogen, and oxygen. They are made up of fatty acids and other compounds. They provide cells with energy, store energy, and help form cell membranes. Q: Lipids are organic compounds that consist of carbon, hydrogen, and? Choices: - nitrogen - methane - helium - oxygen A:
oxygen
Answer the following question given this paragraph: When two different alleles (heritable factors) are inherited together, one may be expressed, while the effect of the other may be "silenced. " In the case of pod color, the allele for green pods is always expressed and is dominant . The allele for yellow pods, which is not expressed, is recessive . For instance, if a plant inherits a "yellow-pod" allele and a "green pod" allele, it will have only green pods. Q: What's the term for an allele that's always expressed over another? Choices: - prevalent - mutated - recessive - dominant A:
dominant
Q: Answer the following question given this paragraph: Example 3.5 Calculating Projectile Motion: Hot Rock Projectile Kilauea in Hawaii is the world's most continuously active volcano. Very active volcanoes characteristically eject red-hot rocks and lava rather than smoke and ash. Suppose a large rock is ejected from the volcano with a speed of 25.0 m/s and at an angle 35.0 above the horizontal, as shown in Figure 3.40. The rock strikes the side of the volcano at an altitude 20.0 m lower than its starting point. (a) Calculate the time it takes the rock to follow this path. (b) What are the magnitude and direction of the rock's velocity at impact?. Q: Kilauea in hawaii is the world's most continuously active volcano. very active volcanoes characteristically eject red-hot rocks and lava rather than this? Choices: - greenhouse gases - carbon and smog - magma - smoke and ash A:
A: smoke and ash
Question: Answer the following question given this paragraph: Only certain materials, called ferromagnetic materials, can be magnetized. They include iron, cobalt, and nickel. Materials that have been magnetized may become temporary or permanent magnets. Q: What are materials that can be magnetized called? Choices: - catalytic materials - interstitial materials - Metal material - ferromagnetic materials A:
Answer: ferromagnetic materials
*Question*
Answer the following question given this paragraph: Q: Prostaglandins also help regulate the aggregation of platelets, one step in the formation of what? Choices: - bloats - acne - cysts - blood clots A:
**Answer**
blood clots
*Question*
Answer the following question given this paragraph: low, the two metals with the highest ionization energies (beryllium and magnesium) do form compounds that exhibit some covalent characters. Like the alkali metals, the heavier alkaline earth metals impart color to a flame. As in the case of the alkali metals, this is part of the emission spectrum of these elements. Calcium and strontium produce shades of red, whereas barium produces a green color. Magnesium is a silver-white metal that is malleable and ductile at high temperatures. Passivation decreases the reactivity of magnesium metal. Upon exposure to air, a tightly adhering layer of magnesium oxycarbonate forms on the surface of the metal and inhibits further reaction. (The carbonate comes from the reaction of carbon dioxide in the atmosphere. ) Magnesium is the lightest of the widely used structural metals, which is why most magnesium production is for lightweight alloys. Magnesium (shown in Figure 18.6), calcium, strontium, and barium react with water and air. At room temperature, barium shows the most vigorous reaction. The products of the reaction with water are hydrogen and the metal hydroxide. The formation of hydrogen gas indicates that the heavier alkaline earth metals are better reducing agents (more easily oxidized) than is hydrogen. As expected, these metals react with both acids and nonmetals to form ionic compounds. Unlike most salts of the alkali metals, many of the common salts of the alkaline earth metals are insoluble in water because of the high lattice energies of these compounds, containing a divalent metal ion. Q: Which is the lightest of the widely used structural metals? Choices: - Metal - calcium - potassium - magnesium A:
**Answer**
magnesium