As magnification increases what happens to the depth of field(DOF) of the microscope?
a. DOF increases
b. DOF decreases
c. Nothing
d. Magnification is altered
Ans: b. DOF decreases
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Which of the following traits is seen only in closed circulatory systems?
a. blood moves through heart(s) b. blood remains inside a heart or vessel at all times c. blood moves through large vessels d. blood mixes with interstitial fluid
Reactions that tend to proceed on their own, releasing energy, are called:
A. endergonic B. productive C. exergonic D. catalytic
Please choose the term that describes a type of adaptive immunity occurring when a child gets the chickenpox vaccine.
A) Artificial passive immunity B) Natural active immunity C) Natural passive immunity D) Artificial active immunity
Which of the following accumulates sulfur granules inside the cell?
A. Cyanobacteria B. Purple sulfur bacteria C. Green sulfur bacteria D. None of the choices are correct.