ABO discrepancies are categorized into ____ groups

The study of the effects of aging and age-related diseases in human beings is called:

A) dementiology. B) geriatrics. C) gerontology. D) senescence.

In dental plaque metabolism, after the microorganism is exposed to sucrose, they produce:

A) Acid B) Intracellular polysaccharides C) Extracellular polysaccharides D) All of the above