Animal models such as the ____________________ and ____________________ are being studied to identify single genes that control aspects of learning, memory, and spatial perception
Fill in the blank(s) with correct word
fruit fly; mouse
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An intestinal protozoan appeared 8 µm in diameter with a small, compact, centrally located karyosome. Four nuclei were observed in the mature cyst. The organism can be identified as:
a. E. histolytica. b. E. dispar. c. E. hartmanni. d. E. coli.
When an enzyme-catalyzed reaction reaches equilibrium
a. the enzymes are now inhibited. b. the chemical reactions cease. c. the rate of the forward and reverse reactions are equal. d. the concentration of reactants equals the concentration of products. e. ATP is no longer required to drive the reaction.
Four of the five roles listed below are functions of
roots. Select the exception. a. support b. synthesis of food c. absorption of water and minerals d. conduction of water and solutes e. anchorage
Which type of tissue covers body surfaces and lines body cavities?
A. connective tissue B. muscular tissue C. nervous tissue D. vascular tissue E. epithelial tissue