Humans with compromised _____ systems can more easily experience disease caused by normal biota
Fill in the blank(s) with the appropriate word(s).
immune
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What is the major difference between the endosymbiotic relationship theory and the symbiotic relationship theory?
A. In the endosymbiotic relationship theory a archaeon engulfs a bacterium while in the symbiotic relationship theory a archaeon and bacterium unite, joining their plasma membranes. B. In the endosymbiotic relationship theory an archaeon and bacterium unite, joining their plasma membranes while in the symbiotic relationship theory an archaeon engulfs a bacterium. C. The endosymbiotic relationship theory explains the origin of mitochondria and chloroplasts, but not the nucleus; the symbiotic relationship theory explains the origin of mitochondria, chloroplasts and the nucleus. D. The symbiotic relationship theory explains the origin of mitochondria and chloroplasts, but not the nucleus; the endosymbiotic relationship theory explains the origin of mitochondria, chloroplasts and the nucleus.
Some microbes secrete small molecules that induce other microbes to settle nearby. When a certain number of individuals have assembled, the chemical signal is strong enough to induce the aggregation to respond collectively to stimuli. This process is called
A. bioremediation B. mutualism C. conjugation D. quorum sensing E. mass-settling
Cultured skin substitutes used to treat burns and chronic wounds are extracted from which tissue?
a. bone marrow b. foreskin from circumcised infants c. umbilical blood d. adult skin
e. trachea epitheliumIndividuals with AB blood type are called "universal donors" because they do not have antibodies against blood group antigens.
Answer the following statement true (T) or false (F)