The Enzyme Fumarase Has a PH Optimum of About 7

question 10

Multiple Choice

The enzyme fumarase has a pH optimum of about 7.6. What would be the buffer of choice to study this enzyme?

• A) lactic acid (K_a = 1.38 × 10−⁴, pK_a = 3.86)
• B) bicarbonate (K_a = 6.3 × 10−¹¹, pK_a = 10.24)
• C) acetic acid (K_a = 1.74 × 10−⁵, pK_a = 4.76)
• D) succinate (K_a = 2.34 × 10−⁶, pK_a = 5.63)
• E) tris-hydroxymethyl aminomethane (K_a = 8.32 × 10−⁹, pK_a = 8.07)

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Definitions:

Aggregate Demand

The aggregate bid for all goods and services in an economy, pegged at a given price level throughout an agreed-upon time period.

Price Expectations

Anticipations or forecasts by consumers and businesses about future prices, which can influence their current buying and selling decisions.

Short-run Aggregate Supply

The total supply of goods and services that firms in an economy plan on selling during a short time period, taking into consideration the price levels of the market.

Production Costs

The expenses incurred in the manufacture of a product, including raw materials, labor, and overheads.