Which of the following statements is false?
A. tissues exist within organs which exist within organ systems
B. communities exist within populations which exist within ecosystems
C. organelles exist within cells which exist within tissues
D. communities exist within ecosystems which exist in the biosphere
Ans: A. tissues exist within organs which exist within organ systems
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The spindle apparatus becomes visible during
a. anaphase. b. metaphase. c. interphase. d. prophase. e. telophase.
When heterozygotes are favored over homozygotes __________ selection occurs
a. stabilizing b. directional c. disruptive d. frequency-dependent e. abnormal
Metabotropic receptors act by initiating changes in second messenger systems in target cells.
Answer the following statement true (T) or false (F)
If the WER gene were expressed in every root epidermal cell, the plant would
A. greatly increase its absorptive capacity. B. strengthen its attachment to the soil. C. increase in the diameter of its roots. D. greatly reduce its ability to exchange gases at the epidermal surface. E. greatly reduce its water and nutrient uptake.