Phosphofructokinase Is an Important Control Enzyme in the Regulation of Cellular

question 84

Multiple Choice

Phosphofructokinase is an important control enzyme in the regulation of cellular respiration. Which of the following statements correctly describes phosphofructokinase activity?

• A) It is inhibited by AMP.
• B) It is activated by ATP.
• C) It is activated by citrate, an intermediate of the citric acid cycle.
• D) It catalyzes the conversion of fructose 1,6-bisphosphate to fructose 6-phosphate, an early step of glycolysis.
• E) It is an allosteric enzyme.

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Definitions:

Agricultural Price Supports

Government interventions to stabilize or increase agricultural product prices through mechanisms such as subsidies or purchase commitments.

Acreage Allotments

A pre-1996 government program that limited the total number of acres to be used in producing (reduced amounts of) various food and fiber products and allocated these acres among individual farmers. These farmers had to limit their plantings to the allotted number of acres to obtain price supports for their crops.

Parity Ratio

is a measurement used to compare the value of one thing against another, often in agriculture or finance.

Prices Received

The amounts of money received by producers or sellers for their goods or services in the market.