____ do NOT belong to the kingdom Protista.
A. Water molds
B. Algae
C. Protozoa
D. Yeasts
D. Yeasts
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The simplest eye structure, which is able to perceive light but not form an image, is called a
a. compound eye. b. single-lens eye. c. ocellus. d. ommatidia. e. photoreceptor.
You, as a cell biologist, discover that there is strong evidence that chloroplasts, found in plant and algal cells, are descended from bacteria but not eukaryotes. What theory would explain this finding?
A) macroevolution B) endosymbiont C) back to front D) bottleneck
Continuous cell lines differ from primary cell lines in that
A) viruses can be grown in continuous cell lines. B) continuous cell lines always have to be re-isolated from animal tissues. C) continuous cell lines are derived from primary cell lines. D) continuous cell lines can be maintained through an indefinite number of generations. E) continuous cell lines are from human embryos.
Interpreting the coefficients on fixed effects will always be based on what?
A. The sign of the coefficient on the instrumental variable in the first stage regression. B. The standard error on the treatment variable. C. The base group omitted from the regression. D. If the regression was run using STATA or Excel.