Connective tissue sacs lined with synovial membranes that act as cushions in places where friction develops are called ________.
A) menisci
B) bursae
C) ligaments
D) tendons
B) bursae
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Indicate whether the statement is true or false
The molecular formula H2O means
A. 1 hydrogen atom and 1 oxygen atom. B. 1 hydrogen atom and 2 oxygen atoms. C. 2 hydrogen atoms and 2 oxygen atoms. D. 2 hydrogen atoms and 1 oxygen atom. E. None of the choices are correct.
Define interferons
A) Interferons are small proteins released by virus-infected cells that trigger the production of antiviral proteins. B) Interferons are phagocytic white blood cells that attack virus-infected cells. C) Interferons are circulating proteins that assist antibodies in the destruction of pathogens. D) Interferons are chemicals that induce fever to accelerate tissue metabolism and defenses. E) Interferons are circulating proteins that bind specific antigens as part of the adaptive immune response.
Microtubules
A) are hollow, filamentous structures. B) form cilia that aid in cell movement. C) are composed of tubulin. D) are the largest cytoplasmic fibers. E) All of the answers are correct.