Which type of microscope does not use light in forming the specimen image?
A. Phase-contrast
B. Bright-field
C. Fluorescence
D. Dark-field
E. Electron
Answer: E
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A substrate
a. fits into the active site of a specific enzyme. b. fits into the active site of another specific substrate. c. catalyzes a chemical reaction. d. is always a protein. e. lowers the energy of activation in a chemical reaction.
The current estimates of the ENCODE project for percent functionality of the human genome based on the ENCODE definition of functionality is ________ the estimate of functionality based on the selected-effect functionality definition.
A. less than B. greater than C. equal to
Merozoites are a result of
A) meiosis. B) schizogony. C) mitosis. D) crossing over. E) conjugation.
Early Greek philosophers were among the first to:
a. develop a philosophy of a natural world driven by physical laws. b. describe the heavenly bodies as gods or personages. c. explain the world around them according to fixed laws of nature. d. A and C.