Question

Platelets adhere to the surface of a torn blood vessel. As they do so, they release substances which attract more platelets to the damaged area. More platelets then adhere to the damaged area. The cycle accelerates and repeats until the damaged area is sealed.

a. This is a positive feedback loop because the response reinforces the initial change.

Answer 1

Platelets adhere to a torn blood vessel, releasing substances that attract more platelets and create a positive feedback loop to seal the damaged area.

Step-by-step explanation:

Platelets adhere to the surface of a torn blood vessel, releasing substances which attract more platelets to the damaged area. This process creates a positive feedback loop because the response reinforces the initial change. As more platelets adhere to the damaged area, they release more substances, attracting even more platelets, and accelerating the cycle until the damaged area is sealed.