The maximum volume of air forcefully exhaled is the
A) Expiratory reserve volume
B) INSPIRATORY RESERVE VOLUME
C) tidal volume
D) vital capacity
Answer: B) INSPIRATORY RESERVE VOLUME
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Which of the following is true about the structure of DNA?
A. Purine and pyrimidine bases are joined by phosphodiester bonds. B. Adjacent bases are stacked on top of each other, one base pair every 0.34 nm. C. Purine and pyrimidine bases are attached to the 1'-carbon of the deoxyribose sugars. D. All of the choices are correct.
Which of the following is false about the bacterial cytoskeleton?
A) The bacterial cytoskeleton contains actin and tubulin proteins. B) The bacterial cytoskeleton acts as scaffolding to organize cell division. C) The bacterial cytoskeleton directs the construction of the rigid cell wall. D) The bacterial cytoskeleton provides an overall general organization to the cytoplasm for a variety of biochemical processes. E) The bacterial cytoskeleton is composed of long protein filaments.
Which gene product would be most useful for distinguishing between a microsporidian and a blastocladiomycete?
A. ATP synthase B. Phospholipidase C. DNA polymerase D. Chitin E. Rubisco
The tracheal system of insects __________.
cb. is stiffened with chitinous rings and leads into the lungs c. is filled by positive pressure breathing d. ramifies along capillaries of the circulatory system for gas exchange e. provides an extensive, fluid-filled system of tubes for gas exchange