Michigan Esthetician State Board Practice Exam

What is vitamin K essential for?

1. Production of red blood cells

2. Synthesis of proteins necessary for blood coagulation

3. Enhancement of vision

4. Regulation of metabolic processes

The correct answer is: Synthesis of proteins necessary for blood coagulation

Vitamin K plays a crucial role in the synthesis of proteins that are necessary for blood coagulation, or the process of blood clotting. This vitamin is essential for the production of clotting factors, which are proteins produced in the liver that help stop bleeding when injuries occur. Without adequate levels of vitamin K, the synthesis of these proteins is impaired, leading to increased bleeding and difficulty in clotting. In contrast, the other options highlight different functions linked to various vitamins and nutrients. For example, the production of red blood cells primarily involves other vitamins such as B12 and folate, while enhancements in vision are typically associated with vitamin A. Regulation of metabolic processes involves a range of nutrients and hormones that function independently of vitamin K. Thus, option B is the most accurate representation of vitamin K's essential function in the body.