Transmission and scanning electron microscopy differ because
A. transmission electron microscopy has high resolution, but scanning electron microscopy does not.
B. transmission electron microscopy shows contrast, but scanning electron microscopy does not.
C. transmission electron microscopy has much higher magnification than scanning electron microscopy.
D. transmission electron microscopy shows two-dimensional ultrastructure, while the scanning electron microscopy shows three-dimensional structure.
E. transmission electron microscopy uses light as an illumination source, while scanning electron microscopy uses electron beams as an illumination source.
D. transmission electron microscopy shows two-dimensional ultrastructure, while the scanning electron microscopy shows three-dimensional structure.
E. transmission electron microscopy uses light as an illumination source, while scanning electron microscopy uses electron beams as an illumination source.
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True or false: in mammals, some genes are expressed differently depending on their parent of origin. This ensures that mammals develop from embryos with one maternal and one paternal genome
A. true B. false
Bioremediation refers to
A. rehabilitating wayward bacteria. B. using bacteria to clean up pollutants. C. vaccine development. D. monitoring newly discovered disease organisms.
All of the following are true about plasmids EXCEPT:
a. Plasmids are small portions of circular DNA found in bacteria. b. Plasmids often encode for genes that carry toxins or antibiotic resistance. c. Plasmids can be transferred from one bacterium to another. d. Plasmids contain DNA and are found in the nucleoid region of bacteria
Losing an exoskeleton in order to grow is called what?
What will be an ideal response?