Fish and crustaceans are similar in that both use _____________ for gas exchange.
A. tracheal tubes
B. gills
C. the walls of the mantle cavity
D. the moist surface of their skin
E. lungs
B. gills
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Indirect EIA is used to detect
A) antigens. B) antibodies. C) viruses. D) serum.
Rhodophyta consist of 4,000 species of ____algae
a. brown b. red c. golden d. green e. blue-green
One of the problems associated with assisted reproduction is that ____
a. technology for effective gamete freezing has not been developed b. the techniques for intrauterine implantation have not been fully explored c. deleterious recessive alleles can be passed on to offspring d. sperm cannot live outside the human body e. the potential harm to the mother is largely unknown
Which of the following is NOT involved in altering the resistance of the airway to air movement?
A) secretion of mucus into the airway B) transpulmonary pressure C) contractile activity of bronchiolar smooth muscle cells D) tractive forces exerted on the airway by surrounding tissue E) pulmonary surfactant concentration