Active transport means the molecules move against a concentration gradient from areas of lower concentration to areas of higher concentration.
Answer:
Nerve cells, blood cells, and reproductive cells
Explanation:
As of 2014, it was often reported in popular media and in the scientific literature that there are about 10<span> times as many microbial cells in the human body than there are human cells; this figure was based on estimates that the human microbiome includes around </span>100 trillion<span> bacterial cells and an adult human</span>
