In which type of microscopy is a beam of electrons used to scan the specimen, followed by the conversion of the
excited electrons to a three-dimensional image?
a. confocal laser scanning microscopy
b. phase-contrast microscopy
c. bright field microscopy
d. scanning electron microscopy
e. fluorescence microscopy
ANSWER: d
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Which of the following organs of the digestive system is different from the other four because it does
NOT produce any secretions that aid in the digestive process? a. stomach b. liver c. esophagus d. pancreas e. salivary gland
Approximately what percentage of the human genome consists of noncoding DNA?
A) 98% B) 87% C) 77% D) 67%
For photosynthesis in green plants, the electron donor for the light dependent reaction is
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