Question 6 (1 point) At the molecular level, cells from different types of organisms vary in their tolerance to temperature and pH. This variation can mostly likely be attributed to the types of enzymes present in the cells. ATP efficiency. ability of the cells to form glucose polymers. replication of nucleic acids. extent of saturation of fatty acids.
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Step 1: Enzymes are proteins that catalyze (speed up) biochemical reactions. Show more…
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Temperature and pH Effects. Figure 6-4 illustrates enzyme activities as functions of temperature and pH. In general, the activity of a specific enzyme is highest at the temperature and $\mathrm{pH}$ that are characteristic of the environment in which the enzyme normally functions. (a) Explain the shapes of the curves in Figure $6-4$ in terms of the major chemical or physical factors that affect enzyme activity. (b) For each enzyme in Figure $6-4,$ suggest the adaptive advantage of having the enzyme activity profile shown in the figure. (c) Some enzymes have a very flat pH profile-that is, they have essentially the same activity over a broad pH range. How might you explain this observation?
Sri K.
Two environmental factors that affect enzyme activity are pH and temperature, as seen in the figures here. Salinity (salt concentration) is another factor that can affect enzyme activity. If you were to measure an enzyme's activity over a range of salinities, which of the curves below would you expect your results to resemble more? Explain your reasoning, using scientific terminology where applicable.
Kerissa B.
_____ modify the rate of enzyme activity. Cells Carbohydrates Nucleic acids
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