Answer:
yes it's called a basic unit of life
Explanation:
the cellular level of an organism is where the metabolic processes occur that keep the organism alive
A specific organ on which a hormone, drug, or other substance acts
The tibia (shin bone) is in gact the second longest bone in the human body. ;)
Natural barriers include the skin, mucous membranes, tears, earwax, mucus, and stomach acid. Also, the normal flow of urine washes out microorganisms that enter the urinary tract. The immune system uses white blood cells and antibodies to identify and eliminate organisms that get through the body's natural barriers.
