A newspaper ad for a local toy store indicates that an inexpensive toy microscope available for a small child is able to magnify specimens nearly as much as the more costly microscope available in your college lab
What is the primary reason for the price difference? A) The toy microscope does not have the same fine control for focus of the specimen.
B) The toy microscope magnifies a good deal, but has low resolution and therefore poor quality images.
C) The college microscope produces greater contrast in the specimens.
D) The toy microscope usually uses a different wavelength of light source.
B
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One strand of DNA has the sequence 5? GGTCTA 3?. What is the sequence of the other strand?
A) 5? CCAGAT 3? B) 5? ATCTGG 3? C) 3? GGTCTA 5? D) 5? TAGACC 3?
The corpus luteum is indicated by the letter ____
a. A b. B c. C d. D e. E
Microvilli project from the
a. lymph vessels. b. serosa. c. rugae. d. epithelial cell's plasma membrane. e. longitudinal muscle.
The influenza virus is typical of many animal viruses in that is has an envelope composed of lipids and glycoproteins. Which of the following statements about the envelope is ACCURATE?
A. The envelope is formed via the action of integrase. B. The envelope glycoproteins are encoded by genes found in the host genome. C. The envelope is inside the capsid. D. The envelope is obtained from the host cell upon entry into the cell. E. The envelope is obtained from the host cell when the virus buds from the plasma membrane.