---

---

Select your answer:
         

Next Quiz >

Topics:

Mouth - Stomach Homeostasis Vision and Hearing Defects Orthopaedic Neurology Muscular System NCHSE Gestalt Therapy Type of Dementia Thrombosis, Emboliya Life Processes Dermatology Digestion and Absorption of Carbohydrates Biochemistry/Cells Vaccines Pain Management Muscularskeletal System

Other quiz:

The Circulatory System › View

It lets blood be pumped from the heart to the rest of the body.

A. Aortic valve

B. Bicuspid valve

C. Tricuspid valve

D. Pulmonary valve

---

Metabolism › View

Increasing the temperature increases the rate of an enzyme-catalyzed reaction. Once a critical temperature is reached, the reaction stops. Why does this happen?

A. The concentration of reactants drop

B. The enzymes have all been consumed in the reation

C. The increase in temperature alters the pH

D. The polypeptide chains in the enzyme denature

---