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Multiple Choice
Which of the following best describes a function of vitamins and minerals in cellular metabolism?
A
They serve as the primary source of cellular energy.
B
They function as genetic material in the cell nucleus.
C
They act as cofactors and coenzymes that assist enzymes in metabolic reactions.
D
They are directly converted into ATP during glycolysis.
Verified step by step guidance
1
Understand the role of vitamins and minerals in cellular metabolism. Vitamins and minerals are not primary sources of energy like carbohydrates, fats, or proteins. Instead, they assist enzymes in facilitating metabolic reactions.
Learn the definitions of cofactors and coenzymes. Cofactors are non-protein chemical compounds or metallic ions required for enzyme activity, while coenzymes are organic molecules that bind to enzymes and help them function.
Recognize that enzymes are biological catalysts that speed up chemical reactions in the cell. Many enzymes require the presence of cofactors or coenzymes to perform their functions effectively.
Clarify that vitamins often serve as precursors to coenzymes. For example, vitamin B1 (thiamine) is a precursor to thiamine pyrophosphate, a coenzyme involved in energy metabolism.
Understand that vitamins and minerals are not directly converted into ATP during glycolysis or other metabolic pathways. Instead, they assist enzymes in processes that lead to ATP production, such as glycolysis, the citric acid cycle, and oxidative phosphorylation.