BioG 102 - web quiz march 30 - Web Quiz: Differentiation I...

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Web Quiz: Differentiation I and II, Chapter 21 1) The process of apoptosis is: a. cell death due to excessive osmotic swelling. b. the mating sound made by fathers clicking their toes. c. the removal of cells from an area by their migration to another tissue. d. one means of removing cells that are becoming cancerous. e. induced by mRNA received from neighboring cell. 2) The graph to the right shows bicoid and nanos protein gradients for a wild-type Drosophila larva. Bicoid and nanos are ____ that influence the ____ genes. a) morphogens, gap b) morphogens, pair rule c) cytoplasmic determinants, gap d) cytoplasmic determinants, segment polarity e) inducers, homeotic 3) In the development of the vulva of the nematode C. elegans , which one of the following is not essential? A) The inducer proteins must be presented at different concentrations to different cells. B) The receptors for the inducer proteins must not be on all the vulval precursor cells. C) Different genes in the vulval precursor cells must be expressed. D) The binding of one inducer to a cell's receptors must induce the creation and
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BioG 102 - web quiz march 30 - Web Quiz: Differentiation I...

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