Which of the Choices Correctly Represents the Synthesis of DTTP $\to$

question 27

Multiple Choice

Which of the choices correctly represents the synthesis of dTTP as represented by the following reactions?
(I) dUMP + N⁵,N¹⁰-methylenetetrahydrofolate $\to$ dTMP + dihydrofolate
(II) dTMP + ATP $\to$ dTTP + P_i
(III) dUTP + H₂O $\to$ dUMP + PP_i
(IV) dUTP + N⁵,N¹⁰-methylenetetrahydrofolate $\to$ dTTP + dihydrofolate

• A)I \(\to\) II \(\to\) IV
• B)IV only
• C)III \(\to\) IV \(\to\) I \(\to\) II
• D)III \(\to\) I \(\to\) II
• E)III \(\to\) I

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Definitions:

Token Economy

A behavioral modification system that uses tokens as a form of reward, which can be exchanged for desirable items or privileges as reinforcement for desired behaviors.

Cognitive-behavioral Therapy

A type of psychological treatment that helps individuals understand the thoughts and feelings that influence behaviors.

Systematic Desensitization

A method in behavioral therapy used to reduce phobic or anxiety responses, involving gradual exposure to the feared object or situation.

Psychodynamic Therapy

A form of depth psychology, the primary focus of which is to reveal the unconscious content of a client's psyche in an effort to alleviate psychic tension.