If you were doing research on lung tissue, to change the state of the bronchioles you would apply a drug that affected the function of
A. cartilage.
B. smooth muscle.
C. cartilage and smooth muscle.
D. skeletal muscle.
E. cartilage and skeletal muscle.
B. smooth muscle.
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Which of the following are characteristics of a keystone species?
A. They are most often mammals. B. They evoke a strong emotional response in people. C. Their presence dictates the survival of the entire community. D. They have a very large population. E. None of these are characteristics of keystone species.
Select the best choice for the following statements in reference to the four hominids listed below.
A. Homospecies whose fossils were discovered with stone tools in Kenya. B. The first species found outside of Africa and established a population in the Republic of Georgia. C. The only surviving Homo species. D. The Neanderthals belong to this species.
Which type of bioimaging technique is used to view the fine structures inside a chloroplast?
A. Transmission light microscope B. Compound light microscope C. X-ray crystallography D. Scanning electron microscopy E. Fluorescence microscopy
You find an animal that has a flexible cuticle, longitudinal muscles, a complete digestive system, and a false coelom
What is its most likely identity? a. a nematode b. a cnidarian c. a flatworm d. an echinoderm e. a sponge