SCIENCE
RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The enzymes will be destroyed by lysosomes
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The enzymes will lose their bond structure and fall apart.
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The enzymes will require less energy to function than at 70
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The enzymes will not increase the rate of reactions as much as they would at 70
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Detailed explanation-1: -Some bacteria live in hot springs. Their cells contain enzymes that function best at temperatures of 70 C or higher at a temperature of 50 C, how will the enzymes in these bacterial cells most likely be affected? The enzymes will not increase the rate of reactions as much as they would at 70 C.
Detailed explanation-2: -The rate of reaction of the human enzyme decreases as the entire enzyme denatures, while the rate of the reaction of the thermophilic bacterial enzyme increases as only the active site of the enzyme denatures at higher temperatures, allowing for a tighter fit with the substrate.
Detailed explanation-3: -In fact, the microbe’s cellulose-digesting enzyme, called a cellulase, is most active at a record 109 degrees Celsius (228 degrees Fahrenheit), significantly above the 100℃ (212℉) boiling point of water.
Detailed explanation-4: -Enzymes synthesized by hyperthermophiles (bacteria and archaea with optimal growth temperatures of >80°C), also called hyperthermophilic enzymes, are typically thermostable (i.e., resistant to irreversible inactivation at high temperatures) and are optimally active at high temperatures.
Detailed explanation-5: -How will the enzymes in these bacteria most likely change if the temperature is lowered to 45∘C45 ^