Which of the following has not contributed to the evolutionary success of arthropods?
a. jointed appendages
b. water vascular system
c. well-developed sense organs
d. hard exoskeleton
e. compound eyes
B
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Of the following enzymes associated with the TCA cycle, which of the following enzymes is not under allosteric regulation?
A) isocitrate dehydrogenase B) ?-ketoglutarate dehydrogenase C) malate dehydrogenase D) fumarate hydratase E) pyruvate dehydrogenase complex
Four of the five structures listed below are parts of
the central nervous system. Select the exception. a. spinal cord b. medulla c. ganglia d. cerebellum e. cerebrum
Which of these tissues is between the epidermis and a vascular bundle in a young dicot stem?
A) Cortex B) Xylem C) Pith D) Phloem E) Cork
Influenza infection can be treated with
A. oseltamivir. B. amantadine. C. zanamivir. D. rimantadine. E. All of the choices are correct.