Fetal blood flows through_____________which project into the placental.
Fill in the blank(s) with the appropriate word(s).
chorionic villi
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Metabolism is the sum of all _____________________ by which cells convert and utilize energy Fill in the blank(s) with the appropriate word(s)
A baby arrives at an emergency room suffering from violent muscles spasms and difficulty breathing. The baby's body is so rigid a proper exam is difficult, but the staff note the baby is only a few weeks old and the umbilicus has not healed properly. The
signs are consistent with which of the following diseases? A) infant botulism B) acute bacterial meningitis C) tetanus D) rabies E) listeriosis
Acellular vaccines and subunit vaccines
A. contain modified bacterial exotoxin molecules. B. confer passive immunity. C. are always genetically engineered. D. contain select antigenic components of a pathogen rather than whole cells or viruses. E. All of these choices are correct.
Staphylococcus bacteria are commonly present in the human nasal cavity but rarely cause disease of the upper respiratory system. This situation is an example of (commensalism/mutualism/parasitism).
Fill in the blank(s) with the appropriate word(s).