BI-1112
Components of blood
Biology · Secondary 3 · Hard · Components of blood
A person is given a drug that reduces the activity of vitamin K in the body. Vitamin K is needed to make prothrombin. How will this drug affect blood clotting?
- Blood clotting will be slower because less prothrombin is available to form thrombin.
- Blood clotting will be faster because less vitamin K makes platelets more active.
- Blood clotting will be unchanged because vitamin K only affects red blood cells.
- Blood will not clot at all because fibrinogen cannot be produced without vitamin K.
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