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home / study / science / biology / questions and answers / which of the following best explains why atp is ... Question: Which of the following BEST explains why ATP is a ... Save Which of the following BEST explains why ATP is a positive regulator of aspartate transcarbamoylase (ATCase)? A. Aspartate is only available when ATP levels are high. B. ATP levels correspond to CTP levels, thus when both ATP and CTP are high, ATCase is active. C. Nucleic acids should only be produced when ATP levels are high. D. ATP always converts allosteric enzymes from the T state to the R state. E. None of the answers is correct.

Expert Solution

Which of the following BEST explains why ATP is a ... Save Which of the following BEST explains why ATP is a positive regulator of aspartate transcarbamoylase (ATCase)?

A. Aspartate is only available when ATP levels are high.

FALSE,

B. ATP levels correspond to CTP levels, thus when both ATP and CTP are high, ATCase is active.

False, it is inactive

C. Nucleic acids should only be produced when ATP levels are high.

False, they are produced at normal levels as well

D. ATP always converts allosteric enzymes from the T state to the R state.

The binding of substrate to the catalytic subunits results in an equilibrium shift towards the R state..

In the other hand, the binding of CTP to the regulatory subunits results in an equilibrium shift towards the T state.

then... binding of ATP to the regulatory subunits results in an equilibrium shift towards the R state

E. None of the answers is correct.

false, since D is true

CHOOSE D

queen_honey_blossom answered 1 year ago

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