Gamma interferon is used to treat
a. herpes infections.
b. multiple sclerosis.
c. measles.
d. mumps.
e. hepatitis C.
E
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Phytoplankton of the open ocean are very small in order to:
a. avoid detection by grazers. b. maximize their surface area. c. increase their sinking rates. d. none of the above
At one time, the pituitary was known as the ‘master gland’. Explain why this name is both fitting and misplaced. What will be an ideal response?
A probable sequence of the evolution of cells was
A. autotroph ® aerobic heterotroph ® anaerobic heterotroph. B. anaerobic heterotroph ® aerobic heterotroph ® autotroph. C. anaerobic heterotroph ® autotroph ® aerobic heterotroph. D. aerobic heterotroph ® autotroph ® anaerobic heterotroph.
Most protozoans exist in two forms during their life cycle. The trophozoite form is the active feeding form of the organism, while the cyst stage represents the inactive form.
A) True B) False