The activation of complement is effective at initiating pathogen engulfment and destruction. This immune-protective process is made possible by:

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food

Amines amides and amino acids are categories of