Practice Quiz

MTEL Biology Practice Exam - Question List

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56.
In invertebrates, the speed at which an action potential travels along an axon is directly proportional to the axon's diameter. However, vertebrate axons have narrow diameters, but can still conduct action potentials at very high speeds. This is true because vertebrate axons:
  1. Contain higher concentrations of water that increase the conductivity.
  2. Possess a lipid-rich myelin sheath that functions as electrical insulation.
  3. Operate at higher body temperatures that reduce electrical resistance.
  4. Generate action potentials that use sodium rather than calcium to generate electrical impulses.
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57.
Which of the following best describes the role played by the hormone oxytocin in human reproduction?
  1. Inducing and regulating uterine contractions during the various stages of labor.
  2. Stimulating the growth of follicles in the ovary and maturation of the oocytes.
  3. Inducing and regulating the disintegration of the uterine lining during menstruation.
  4. Stimulating the development of the endometrium in preparation for pregnancy.
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58.
The "fight or flight" response to a stress is initiated when nerve impulses stimulate the:
  1. Thyroid to produce the hormones triiodothyronine and thyroxine.
  2. Posterior pituitary to release the tropic hormone adrenocorticotrophic hormone.
  3. Adrenal medulla to secrete the catecholamines, epinephrine and norepinephrine.
  4. Parathyroid glands to release the glucocorticoid hormone cortisol.
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59.
Which of the following is a major difference between cartilage and other types of connective tissues? 
  1. The extracellular matrix in cartilage lacks collagen.
  2. Cartilage does not contain blood vessels.
  3. The primary mineral in cartilage is phosphorus rather than calcium.
  4. Cartilage cells do not possess nuclei.
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60.
In the human skeleton, which of the following has a pivot joint?
  1. Shoulder
  2. Knee
  3. Elbow
  4. Finger
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