Certified Biomedical Equipment Technician (CBET) 2025 – 400 Free Practice Questions to Pass the Exam

The primary product of cellular metabolism in the blood is indeed cellular metabolism itself, which primarily produces carbon dioxide (CO2) and water as byproducts. When cells undergo metabolic processes to generate energy, they convert nutrients such as glucose and oxygen into ATP (adenosine triphosphate), releasing waste products that are transported in the blood.

The context of this process is important. Carbon dioxide produced during metabolism is carried in the blood to the lungs, where it is exhaled. This exchange is critical for maintaining the acid-base balance and overall homeostasis in the body. Metabolism also generates other metabolites and ions that play a role in various physiological functions.

The other options presented do not directly relate to the primary products of cellular metabolism. Filtration pertains to the processes of the kidneys, ventilation relates specifically to the movement of air and gas exchange in the lungs, and renal shutdown would indicate a failure of kidney function rather than being a product of metabolism. Therefore, the focus on cellular metabolism itself is crucial to understanding its role in creating essential byproducts that are maintained in the blood.