객관식
Which of the following is true about mineral bioavailability?
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1. Introduction to Biochemistry
Characteristics of Life
객관식
The primary role of the B vitamins is to:
A
act as coenzymes in metabolic reactions
B
function as hormones regulating gene expression
C
provide structural components for cell membranes
D
serve as a major energy source for cells
검증된 단계별 안내1
Understand the role of B vitamins in the body: B vitamins are water-soluble vitamins that play a crucial role in various metabolic processes. They are not hormones, structural components, or energy sources, so we need to focus on their biochemical function.
Define the term 'coenzyme': A coenzyme is a non-protein compound that binds to an enzyme and assists in catalyzing a biochemical reaction. B vitamins often act as coenzymes or precursors to coenzymes in metabolic pathways.
Identify specific examples of B vitamins acting as coenzymes: For instance, Vitamin B1 (thiamine) is a precursor for thiamine pyrophosphate, which is a coenzyme in carbohydrate metabolism. Similarly, Vitamin B2 (riboflavin) forms FAD and FMN, which are coenzymes in redox reactions.
Eliminate incorrect options: B vitamins do not function as hormones regulating gene expression, nor do they provide structural components for cell membranes. They also do not serve as a major energy source for cells, as energy primarily comes from macronutrients like carbohydrates, fats, and proteins.
Conclude that the correct answer is 'act as coenzymes in metabolic reactions,' as this aligns with the biochemical role of B vitamins in facilitating enzymatic activity in metabolic pathways.
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