To meet the high oxygen demands of flight,
birds
a. use simple lungs.
b. use air sacs connected to their lungs.
c. use carbon dioxide for respiration.
d. can diffuse oxygen through their skin.
e. use simple lungs, and can diffuse oxygen
through their skin.
B
You might also like to view...
Which of the following factors has delayed the development of laboratory-based genetic systems in Archaea?
A) There are no documented systems of conjugation in Archaea. B) Homologous recombination does NOT occur in Archaea. C) Archaea do NOT host viruses or plasmids. D) Many archaea grow in extreme or unusual conditions that make the use of agar and traditional mutant screening techniques problematic.
A protein inside cells that speeds up the rate of a chemical reaction is a(n) ____
a. hydrocarbon b. inorganic compound c. enzyme d. buffer e. functional group
What would be the consequences if we were to reverse the direction of water flow over the gills of a fish, moving water inward past the operculum, past the gills, the out the mouth? This reversal of water flow would _____
A) reduce efficiency of gas exchange B) change the exchange of gases in the body from carbon dioxide out and oxygen in to carbon dioxide in and oxygen out C) increase the efficiency of gas exchange
All of the following individuals were involved in improving public health in the 19th century EXCEPT
A. Snow. B. Spallanzani. C. Nightingale. D. Semmelweis. E. Lister.