Blood pumped through the systemic circuit is distributed to lower body regions such as the digestive system by________.

A. arterioles
B. carotid arteries
C. pulmonary arteries
D. pulmonary veins
E. the superior vena cava


Answer: A

Biology & Microbiology

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Meat, fruits, and vegetables could be

contaminated with E. coli strains toxic to humans when they come in contact with animal I. feces. II. urine. III. blood.

a. I only b. I and II c. II and III d. I and III e. I, II, and III

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Which of the following best describes sex-linked genes?

a. They are located on the X chromosome. b. They are linked to the sex-determining gene. c. They are expressed differently based on the sex of an individual. d. They are determinants of the sex of an individual.

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Ticks, lice, and mosquitoes often serve as (carriers/transporters/vectors) by hosting and transmitting pathogenic microbes.

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

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