Members of the ____ subphylum, including spiders, ticks, mites, scorpions, and horseshoe crabs,have fanglike

appendages used for biting prey and pedipalps used as grasping organs, sensory organs, or walking legs.



a. Myriapoda
b. Trilobita
c. Chelicerata
d. Hexapoda
e. Crustacea


ANSWER: c

Biology & Microbiology

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When the heart’s pacemaker malfunctions, ___ can result

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If an individual with a dominant phenotype is crossed with an individual with a recessive phenotype, 4 of their 9 offspring show the recessive phenotype. What is the genotype of the dominant parent?

a) either Aa or aa b) either AA or Aa c) Aa d) AA e) aa

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Our understanding of mental illness has been most advanced by discoveries involving the _____

A) degree of convolutions in the brain's surface B) sequence of developmental specialization C) chemicals involved in brain communications D) nature of the blood-brain barrier

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Which of the following experimented with raw meet, maggots and flies in an attempt to disprove the theory of spontaneous generation?

A. Aristotle B. Lazzaro Spallanzani C. Antonie van Leeuwenhoek D. Francesco Redi

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