The biological specialty that deals with the grouping and naming of organisms is called taxonomy or _________.
Fill in the blank(s) with the appropriate word(s).
classification
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To form the blood brain barrier, capillary epithelial cells are sealed together by ____
a. fibronectin b. collagen c. gray matter d. myelin e. tight junctions
Membranes that line the tubes and cavities of the digestive, respiratory, and reproductive systems are called
1.mucous. 2.dense, regular. 3.desmosomes. 4.apocrine 5.serous.
Polyploidy is an important mechanism of speciation in animals
Indicate whether the statement is true or false
What feature of cardiac muscle helps the cells coordinate their contraction as a single unit?
A. large numbers of motor neurons B. covalent bonds between actin and myosin molecules C. intercalated disks rich in gap junctions D. fused cells with multiple nuclei