Discuss the function of hair cells as sensory receptors, and identify two different locations and/or
organs that utilize these receptors. What will be an ideal response?
Hair cells are mechanoreceptors that contain a single long kinocilium and numerous short stereocilia.
When the stereocilia are deformed in one direction, depolarization results, and neurotransmitters are
released which stimulate adjacent neurons; when they are deformed in the other direction,
hyperpolarization results. Hair cells are the main mechanoreceptors in the utricle, saccule, the
semicircular canals, and the organ of Corti.
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In E. coli O157:H7, the O157:H7 refers to the
A. specific type of DNA present. B. specific genus. C. general family. D. the specific LPS and flagella type present.
Which of the following is not one of the four tissue types found in animals?
a. epithelial b. nervous c. lymphatic d. connective
Which tissue cannot divide to give rise to identical progeny in a plant that reproduces asexually?
A. Root B. Stem C. Leaf D. Ovule E. Pollen grain
Which of the following best describes a cloning vector?
A) A DNA molecule that accepts DNA fragments and degrades them in a host. B) A DNA molecule that accepts DNA fragments and replicates the fragment in a host. C) The fragment of DNA encoding a gene of interest. D) The direction in which DNA is cloned.