Which of the following is an advantage of water as a respiratory medium?
a. Water holds less O2 than air.
b. In water, O2 concentration can be affected by solute concentration.
c. The density of water makes it more difficult to ventilate over the respiratory surface.
d. In water, O2 concentration can be affected by temperature.
e. Water keeps the respiratory surface wetted.
E
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Type I hypersensitivity is caused by the release of vasoactive products from mast cells coated with
A) IgA. B) IgE. C) IgG. D) IgM.
Over a long period of time, you would expect a neutral mutation to __________ within a large population
A. increase in frequency B. decrease in frequency C. increase or decrease in frequency D. remain at the same frequency
What are the three basic steps of conventional PCR?
A. Denature, anneal, & strand displacement B. Reverse-transcription, anneal & extend C. Strand displacement, synthesis & release D. Denature, anneal & extension
Which type of tissue forms a communication and coordination system within the body?
A) nervous B) epithelial C) connective D) muscle