The ________ is the organ that delivers oxygen and nutrients and removes carbon dioxide and wastes for the embryo and later fetus

Fill in the blank(s) with correct word


placenta

Biology & Microbiology

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A slime layer gives bacterial cells greater pathogenicity than a capsule.

Answer the following statement true (T) or false (F)

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Animals exchange heat with their environment by which of the following processes EXCEPT?

a. conduction b. radiation c. evaporation d. convection e. thermoregulation

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What is the origin of H5N1 virus?

A. Birds B. Dogs C. Pigs D. Humans E. Cats

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All of the following are correct about salmonelloses except

A. non-typhoidal strains of salmonella are zoonotic in origin. B. foods contaminated by rodent feces may cause outbreaks.. C. outbreaks have been caused by eggs. D. drug resistance of salmonella is on the rise. E. strains are normal flora in dogs and cats.

Biology & Microbiology