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
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Viroids differ from viruses in that:
a. they lack RNA b. they lack a viral envelope c. they are much larger d. they do not replicate e. viroid RNA does not encode proteins
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
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.
Cells or cell parts that detect a stimulus are called
a. effectors. b. integrators. c. sensory receptors. d. regulators. e. detectors.