Which of the Following Is the First Step in the Mechanism

question 17

Multiple Choice

Which of the following is the first step in the mechanism of the reaction shown below?

• A)Carboxylate ion attacks the thiol.
• B)Carboxylate ion attacks the α-phosphorus of ATP.
• C)Carboxylate ion attacks the γ-phosphorus of ATP.
• D)Thiol molecule attacks the β-phosphorus of ATP.
• E)Thiol molecule attacks the acyl group.

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Definitions:

Codominance

A genetic scenario where two alleles of a gene pair in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive.

Alleles

Variants of a gene that exist on the same place on a chromosome and determine distinct traits that can be passed from parents to offspring.

Polygenic Inheritance

A pattern of inheritance where multiple genes are involved in determining a trait or characteristic.

Sex-linked

Refers to genes or traits that are associated with specific sexes due to their location on sex chromosomes, often leading to the expression of certain diseases or characteristics predominantly in one sex.