A closed circulatory system usually consists of all of the following except:a

blood.
b. pumping organ.
c. arteries
d. veins.
e. hemocoel.


E

Biology & Microbiology

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Blood pressure in the body is internally monitored by a homeostatic mechanism known as _______

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Substances NOT usually found in normal human urine are 

A. certain drugs. B. urea and uric acid. C. water molecules. D. glucose molecules. E. K+, H+, and other ions.

Biology & Microbiology

Comb jellies may not be the most familiar animal to you, but they are critical in the food chain because they make up a significant portion of the planktonic biomass

Their feeding strategy is predatory and involves adhesives or mucus on their tentacles or other body parts. What feeding tactic do these animals use? A) suspension feeder B) fluid feeder C) deposit feeder D) food-mass feeder

Biology & Microbiology

The disease known as cryptococcal meningitis

A) begins as a lung infection. B) is caused by a Gram-negative coccus. C) results from exposure to bird droppings. D) is transmitted in respiratory aerosols. E) results from exposure to bird droppings and begins as a lung infection.

Biology & Microbiology