Answer the following statements true (T) or false (F)
1. During their diastole, the heart chambers are contracting.
2. The epithelium lining the circulatory system is termed endothelium.
3. The walls of veins tend to be thicker and more elastic than those of comparably sized arteries.
4. "Vasodilation" refers to a decrease in arteriole diameter.
1. FALSE
2. TRUE
3. FALSE
4. FALSE
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If a psychiatric condition displays 15% concordance in monozygotic twins, and 8% concordance in dizygotic twins, then genetics plays a major role in this trait
a. True b. False Indicate whether the statement is true or false
A direct immunofluorescence test involves a(n)
A. known antibody binding to an unknown antigen. B. lysis reaction. C. agglutination reaction. D. precipitation reaction.
Which statement describes Canada geese populations?
a. all Canada geese populations migrate b. all Canada geese breed where they were raised c. like other migratory birds, Canada geese are protected by federal law d. when living together, migratory Canada geese do not interbreed with nonmigratory individuals e. nonmigratory Canada geese have more goslings (baby geese) than migratory geese
Four of the following statements are true of xylem. Which one is the exception?
A. Conducts water up the plant B. Conducts mineral ions up the plant C. Connects with roots D. Connects with leaves E. Transports sugars