Vitamin K is essential for the process of
A. digestion.
B. absorption.
C. reproduction.
D. coagulation.
D
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Fortifying foods doesn't alter their nutritional content.
a. true b. false
Scientists in a Central American country are studying factors that may be associated with delayed physical growth among a group of low-income children. The children live in a region of the nation that has high levels of lead in drinking water. This study is an example of a(an) ________ study.
A. introspective B. uncontrollable C. conventional D. epidemiological
All of the following are true regarding vitamins EXCEPT:
a. if adequate amounts are not consumed, deficiency diseases develop. b. they are considered essential because the body cannot produce them. c. eating at least one serving of fruit or vegetable a day prevents deficiencies. d. they perform specific functions in the body.
A patient with severe cirrhosis of the liver has received a new liver. He is post op 3 months and is rejecting. Through what main mechanism has this occurred?
a. the complement cells reject the host T cells b. vasculature to the new organ has not been optimal c. there was insufficient immunosuppressive therapy d. antibody to minor histocompatibility antigens