Which term can be applied to both monotremes and sharks?
a. oviparous
b. viviparous
c. ovoviviparous
d. placental
e. eutherial
a
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All lophotrochozoa have:
A. radial symmetry and complex organs. B. bilateral symmetry and complex organs. C. radial symmetry and primitive organs.
All steroids have ____
a. the same number of double bonds b. double bonds in the same positions c. four carbon rings d. the same functional groups e. the same number and positions of double bonds
One conclusion that can be drawn from Figure 38-1 is that:
a. a low ratio of auxin to cytokinin stimulates root development.
b. a low ratio of auxin to cytokinin stimulates shoot development.
c. a low ratio of auxin to cytokinin results in undifferentiated growth.
d. a low ratio of auxin to cytokinin stimulates the formation of an entire plant.
e. a low ratio of auxin to cytokinin results in no growth.
________ encode proteins that promote the loss of growth control and the conversion of a cell to a malignant state. These genes encode proteins that have various functions in a cell's normal activities, among them serving as accelerators of cell proliferation.
a) pro-oncogenes b) oncogenes c) tumor suppressor genes d) proto-oncogenes