Phosphofructokinase is an enzyme involved in glycolysis, which is a metabolic pathway involved in ATP production. It can be allosterically regulated by both ATP and ADP. Why is regulating the activity of this enzyme important? Predict what will happen to
the rate of reaction when ATP levels in the cell are high, and predict what will happen when the levels of ADP in the cell are high.
What will be an ideal response?
When ATP levels in the cell are high, the cell no longer needs to make more ATP, so ATP binds to and shuts down the enzyme. If there is a lot of ADP around, that means energy levels in the cell are low, and the binding of ADP increases enzyme activity, so more ATP is made.
You might also like to view...
In photosynthesis, the net uptake of CO2 by a plant is greatest
A) when PAR equals zero. B) at the light compensation point. C) during photoinhibition. D) at the light saturation point.
Antibiotics are often added to biochemical media to restrict the growth to only those organisms that are being looked for in the specimens.
Answer the following statement true (T) or false (F)
The relationship between strands of RNA and DNA during transcription is ______________.
A. antagonistic B. opposite C. complementary D. an exact duplicate E. unrelated
Classification. Respond to the following statements in reference to the four kinds of receptors listed below.
A. Receptors on the tongue detect variations in this kind of signal. B. Ears detect this kind of energy. C. The warmth you feel from a campfire detected by this receptor. D. Receptors that detect tissue damage.