Which of the Following Statements Is NOT Correct Concerning the Regulation

question 8

Multiple Choice

Which of the following statements is NOT correct concerning the regulation of the purine biosynthetic pathway?

• A)PRPP competitively inhibits the enzyme Gln:PRPP amidotransferase.
• B)ADP and GDP are feedback inhibitors of ribose-5-phosphate pyrophosphokinase.
• C)"A" and "C" nucleotides allosterically inhibit glutamine phosphoribosyl pyrophosphate amidotransferase (Gln:PRPP amidotransferase).
• D)The rate of IMP formation is dependent on the levels of the adenine and guanine nucleotides produced.

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Definitions:

Utricle

A part of the inner ear's vestibular system, responsible for detecting linear accelerations and head position changes.

Vestibule

An entryway or small room between the outer door and the interior of a building, or an anatomical space within the body, especially within the ear or nose.

Inner Ear

The innermost part of the ear, containing the cochlea, vestibule, and semicircular canals, crucial for hearing and balance.

External Auditory Meatus

The external auditory meatus is the ear canal, a tube running from the outer ear to the middle ear, allowing sound to enter the ear for hearing.