NURSING EXAM QUESTIONS
MICROBIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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There is increased or peak activity at body temperature.
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There is little to no activity at high temperatures.
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There is low enzyme activity at low temperatures.
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all of the above are correct.
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Detailed explanation-1: -Temperature: Raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction. However, extreme high temperatures can cause an enzyme to lose its shape (denature) and stop working.
Detailed explanation-2: -Several factors affect the rate at which enzymatic reactions proceed-temperature, pH, enzyme concentration, substrate concentration, and the presence of any inhibitors or activators.
Detailed explanation-3: -Higher temperature generally causes more collisions among the molecules and therefore increases the rate of a reaction. More collisions increase the likelihood that substrate will collide with the active site of the enzyme, thus increasing the rate of an enzyme-catalyzed reaction.
Detailed explanation-4: -Enzymes are biological catalysts which accelerate chemical reactions in organisms. Optimum temperature is the temperature at which enzyme activity is maximum. In humans, this temperature is 37.5oC that is same as the normal body temperature.
Detailed explanation-5: -Factor # 1. Temperature: Factor # 2. Hydrogen Ion Concentration (pH): Factor # 3. Water: Factor # 4. Concentration of the Substrate: Factor # 5. Enzyme Concentration: Factor # 6. Inhibitors: Factor # 7. Accumulation of End-Products: