Ques:Answer the following question given this paragraph: Q: What are two nonliving things that all living things need for survival? Choices: - sunlight - calcium - methane - water and air A:

Ans:water and air
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Ques:Answer the following question given this paragraph: Use a machine. The polymerase chain reaction has revolutionized biological and biomedical research and applications. Luckily many machines have been developed that allow this process to be performed rapidly and with precision. Q: What has has revolutionized biological and biomedical research and applications? Choices: - synthesis chain reaction - organism chain reaction - Compound chain reaction - polymerase chain reaction A:

Ans:polymerase chain reaction
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Ques:Answer the following question given this paragraph: The second stage of photosynthesis takes place in the stroma surrounding the thylakoid membranes of the chloroplast. The reactions of this stage can occur without light, so they are sometimes called light-independent or dark reactions. This stage of photosynthesis is also known as the Calvin cycle because its reactions were discovered by a scientist named Melvin Calvin. He won a Nobel Prize in 1961 for this important discovery. Q: Which cycle is named after the scientist melvin calvin? Choices: - krebs cycle - melvin cycle - melcal cycle - calvin cycle A:

Ans:calvin cycle
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Ques:Answer the following question given this paragraph: Sublimation and Deposition Some solids can transition directly into the gaseous state, bypassing the liquid state, via a process known as sublimation. At room temperature and standard pressure, a piece of dry ice (solid CO2) sublimes, appearing to gradually disappear without ever forming any liquid. Snow and ice sublime at temperatures below the melting point of water, a slow process that may be accelerated by winds and the reduced atmospheric pressures at high altitudes. When solid iodine is warmed, the solid sublimes and a vivid purple vapor forms (Figure 10.27). The reverse of sublimation is called deposition, a process in which gaseous substances condense directly into the solid state, bypassing the liquid state. The formation of frost is an example of deposition. Q: What is the process by which some solids transition directly into gases? Choices: - articulation - vaporization - amplification - sublimation A:

Ans:
sublimation
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