Why can measles virus and poxvirus infect many human tissues and influenza virus can infect only
one type of tissue? What will be an ideal response?
Measles virus and poxvirus have attachment proteins that combine with many different tissue receptors
wheras influenza virus attachment proteins are specific for respiratory tissue
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Subpopulations within a metapopulation are isolated from one another with no movement of individuals between subpopulations
Indicate whether the statement is true or false
Suspensory ligaments are connected to the ___ body.
Fill in the blank(s) with the appropriate word(s).
Myosin and actin are the major contractile proteins in _______ muscle.
A. cardia B. smooth C. skeletal D. two of the above E. all of the above
A major function of the Casparian strip of the endodermal cells of a root is to
(A) protect the meristem as the root tip grows through the abrasive soil particles (B) allow for expansion of the vascular cambium as the root grows laterally (C) control the movement of materials into the vascular cylinder of the root (D) initiate lateral root growth (E) serve as a site for the storage of excess sugars in the form of starch