Birds are different from reptiles in all of the following features except
A. their lack of teeth.
B. the presence of a flight skeleton.
C. endothermy.
D. bipedalism.
E. the presence of feathers.
Answer: D
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The type of muscle tissue surrounding the intestines and blood vessels is _____
A) skeletal muscle B) cardiac muscle C) striated muscle D) intercalated cells E) smooth muscle
The greatest cause of extinction of species is
a. runoff. b. habitat loss. c. invasive species. d. evapotranspiration.
Air in the pleural cavity is called
a. hemothorax. b. pneumothorax. c. hemopneumothorax. d. hydrothorax. e. pleurothorax.
Antiviral medicines target specific stages of the viral life cycle. Which of the following is not a stage of the life cycle that is targeted?
A. uncoating B. maturation C. release D. attachment E. All of the answer choices are correct.