In addition to a vertebral column, all vertebrates have
A. gills.
B. scales.
C. a distinctive head or skull.
D. a tunic.
E. an open circulatory system.
Answer: C
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Answer the following statement true (T) or false (F)
The process by which the major land masses have shifted their positions, changed shapes and separated from each other, is known as
A. Cotranslational sorting. B. Continental drift. C. Depolarization of land masses. D. Differential land movement. E. Cyclic land drift.
Bird song
a. has to be heard before a bird can sing it. b. is learned during early life. c. is specific for each bird species. d. has a genetic component. e. includes all of these.
Rod-shaped bacteria such as Escherichia coli are called ________ based on the shape of the cells
A) bacilli B) cocci C) gram positive D) thermophiles E) anaerobes