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

Biology & Microbiology

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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

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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

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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

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Influenza infection can be treated with

A. oseltamivir. B. amantadine. C. zanamivir. D. rimantadine. E. All of the choices are correct.

Biology & Microbiology