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


C

Biology & Microbiology

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Viroids differ from viruses in that:

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What is the specialized type of neuron that responds to an action potential by releasing a hormone into the blood called?

a. hormonal neuron b. anterior pituitary cell c. posterior pituitary cell d. neurosecretory cell e. endoneuron

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The lowest concentration of an antibiotic that prevents growth is the ________.

A. minimal lethal concentration (MLC) B. 50% inhibitory dose C. minimal inhibitory concentration (MIC) D. All of the choices are correct.

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Cells or cell parts that detect a stimulus are called

a. effectors. b. integrators. c. sensory receptors. d. regulators. e. detectors.

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