30. An example of a gap junction is A. a desmosome. B. a zonula adherens. C. a striation. D. an intercalated disk. E. zonula occludens. 31. The amount of matter in an object is its A. mass. B. weight. C. density. D. volume. E. size. 32. The study of tissues is A. cytology. B. histology. C. molecular biology. D. microbiology. E. surface anatomy. 33. Cells that break down bone are called A. osteoblasts. B. osteoclasts. C. osteocytes. D. fibroblasts. E. chondroblasts. 34. Which subdivision of anatomy involves the study of organs that function tog A. regional B. developmental C. systemic D. histology E. surface anatomy
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Gap junctions consist of the protein complexes called connexons that create channels that allow small water-soluble molecules and inorganic ions up to 1000 daltons to move Group of answer choices: A) from the cytosol into mitochondria. B) from the extracellular fluid into the cytosol. C) from the cytosol into the lysosome. D) from the cytosol of one cell to the cytosol of another cell. E) none of the above
Suman K.
Gap junctions are present in large numbers between (a) all cells, (b) heart muscle cells, (c) kidney cells, (d) cells lining the digestive tract, (e) connective tissues.
How does the structure of a plasmodesma differ from that of a gap junction? a. Gap junctions are essential for transportation in animal cells and plasmodesmata are essential for the movement of substances in plant cells. b. Gap junctions are found to provide attachment in animal cells and plasmodesmata are essential for attachment of plant cells. c. Plasmodesmata are essential for communication between animal cells and gap junctions are necessary for attachment of cells in plant cells. d. Plasmodesmata help in transportation and gap junctions help in attachment, in plant cells.
Bryan V.
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