Ques:Answer the following question given this paragraph: Emphysema is a disease in which the walls of the alveoli break down so less gas can be exchanged by the lungs. The main symptom of emphysema is shortness of breath. The damage to the alveoli is usually caused by smoking and is permanent. Q: What disease associated with smoking involves breakdown of walls of the alveoli, resulting in less gas exchange by the lungs? Choices: - leukemia - cancer - pneumonia - emphysema A:

Ans:emphysema
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Ques:Answer the following question given this paragraph: Equinox comes halfway between the two solstices. At equinoxes, the Sun's rays shine most directly at the Equator ( Figure below ). The daylight and nighttime hours are exactly equal on an equinox. The autumnal, or fall, equinox happens on September 22 or 23. The vernal, or spring, equinox happens March 21 or 22 in the Northern Hemisphere. Q: What event occurs between the two solstices? Choices: - Christmas - summer - Leap Year - equinox A:

Ans:equinox
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Ques:Answer the following question given this paragraph: Rainshadow effect occurs on the leeward side of a mountain range. Q: What side of a mountain does the rainshadow effect occur on? Choices: - starboard - windward - due north - the leeward side A:

Ans:the leeward side
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Ques:Answer the following question given this paragraph: Protein Structure. Primary protein structure is the sequence of amino acids in a single polypeptide. Secondary protein structure refers to internal shapes, such as alpha helices and beta pleated sheets, that a single polypeptide takes on due to bonds between atoms in different parts of the polypeptide. Tertiary protein structure is the overall three-dimensional shape of a protein consisting of one polypeptide. Quaternary protein structure is the shape of a protein consisting of two or more polypeptides. For a brief animation of protein structure, see www. stolaf. edu/people/giannini/flashanimat/proteins/protein%20structure. swf . Q: A sequence of amino acids in single polypeptide is the primary structure for what? Choices: - lipids - cells - dna - proteins A:

Ans:
proteins
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