Answer: A. Prothrombin is converted into thrombin which acts on fibrinogen.
Explanation:
Prothrombin is a protein which is converted into thrombin through a blood clotting factor that is known as factor X or prothrombinase.
Thrombin then transform the fibrinogen protein into fibrin threads. The fibrin thread acts like a wire mesh to trap the blood cells and forms a scab or clot. This entire process is called as coagulation.
Because plants have microtubules.<span />
The more serious condition experienced by the elderly persons is dementia. The dementia is a disorder in which the individual experiencing this may have changes in the way she or he acts, there are memory changes or the person would forget memories and the way he or she reacts changes.
Smoking, heart attack, cancer, car crashes, drugs
When a person uses marijuana, the principal psychoactive chemical called tetrahydrocannabinol (THC) passes from the lungs (with smoking) or digestive tract (with edibles) into the bloodstream. The blood carries THC to the brain, where it acts on specific cannabinoid receptors. These receptors are predominantly found in areas of the brain associated with concentration, thinking, sensory and time
