Hormones secreted by the posterior pituitary gland are made in the _____
A) cerebrum
B) cerebellum
C) thalamus
D) hypothalamus
D
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Which of the following statements is TRUE of small effector molecules?
A. Small effector molecules cause a conformational change in a regulatory protein. B. Small effector molecules can prevent a repressor from binding a gene region. C. Small effector molecules regulate gene transcription. D. Small effector molecules regulate gene transcription by binding a regulatory protein. E. All of the choices are correct.
The introduction of a small population onto an island that results in a limited gene pool for a population best describes
a. the Hardy-Weinberg law. b. genetic drift. c. the bottleneck effect. d. the founder effect. e. the effect of genetic isolation.
A neurologist diagnoses a patient with damage to the hippocampus. This observation is consistent with the difficulties the patient reports with
A. effectively coordinating movements once initiated. B. maintaining a steady and regular heartbeat. C. planning movements. D. forming memories of recent events. E. perceiving tactile stimulation from different regions of their body.
What is the main factor that will determine whether or not water can enter the root cells?
A. A lower osmotic pressure in the root tissues than the soil solution B. Type of plant cells that are exposed to the water C. A higher osmotic pressure in the root tissues than the soil solution D. Volume of water available