DAT Biology Practice Test 1# (FREE)

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DAT Biology Practice Test #1

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1. The innate behavior where an animal responds to a stimulus without thought is known as:

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2. What is the euphotic zone in aquatic biomes?

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3. What does it mean for a species to be invasive?

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4. How do vestigial structures provide evidence for evolution?

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5. Which of the following best defines evolution?

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6. Which of the following reproductive methods involves offspring developing and hatching outside of the mother's body?

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7. In which layer of the epidermis do keratinocyte stem cells proliferate?

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8. Where are eccrine glands located?

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9. Which substances are almost completely reabsorbed by the nephron due to their importance in the body?

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10. What best describes the relationship between marine fish and their environment in terms of osmoregulation?

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11. What is the role of enteropeptidase in digestion?

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12. What is the function of Antidiuretic hormone (ADH)?

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13. What type of feedback loop promotes stability in the body by preventing hormone overproduction?

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14. Which of the following types of cartilage is highly flexible and found in ears and epiglottis?

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15. What is the function of the epiphysis in a long bone?

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16. What is the deepest sheath that covers the muscle fibers?

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17. What happens when a stimulus causes the threshold potential to be reached in a neuron?

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18. What is the function of the myelin sheath?

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19. Which type of presentation involves T cells binding to antigens presented on APCs and then releasing interleukins to boost both innate immunity and adaptive immunity?

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20. Which of the following is an example of external immunity?

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21. What is the main intracellular buffer system in humans?

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22. The sinoatrial (SA) node is responsible for initiating the cardiac cycle. Which of the following statements is true about it?

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23. What is the correct formula for calculating cardiac output (CO)?

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24. What is a characteristic feature of bryophytes?

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25. What is the first part of the embryo to emerge during the process of germination?

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26. What is the primary mode of reproduction for organisms in the Platyhelminthes phylum?

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27. How are DNA microarrays used in genomics research?

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28. What is the correct order of organelles from most dense to least dense in density centrifugation?

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29. What is an example of polygenic inheritance?

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30. What is the definition of heredity?

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31. In the structure of nucleosomes, which histone holds the DNA in place?

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32. What are the sister chromatids in a dyad connected by?

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33. What is the function of the pericentriolar material?

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34. What occurs during the process of non-cyclic photophosphorylation?

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35. Which cells in the leaf structure are responsible for most of the photosynthesis?

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36. What is the purpose of the electron transport chain in oxidative phosphorylation?

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37. What is the main difference between the structures of eukaryotic and prokaryotic flagella?

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38. What is the main difference between an agonist and an antagonist in cell signaling?

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39. Which of the following is a exception to the central dogma of genetics?

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40. Which of the following is not a component of carbohydrates?

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