Which of the following cell types do not contain a nucleus?
A. Prokaryotes
B. Eukaryotes
C. Plant cells
D. Protists
Answer: A. Prokaryotes
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A fungus that is dikaryotic ________
a. has two unique nuclei b. is diploid c. is haploid d. has two identical nuclei
Postzygotic isolation barriers prevent
A. a hybrid embryo from developing into a fertile adult. B. fertilization. C. male gametes from joining with female gametes. D. All answers are correct. E. formation of gametes by one of the parents.
What would happen to red blood cells placed in an isotonic solution?
a) none of the choices is correct b) cells would maintain a constant volume c) cells would lyse d) cells would shrink
Respond to the following statements with reference to the five biomes listed below.
A. In this biome you would expect to find soggy masses of vegetation which has not decayed. B. This biome has mild, wet winters and hot, dry summers, with fire-adapted plants. C. This biome is characterized by a crust comprising cyanobacteria, lichen, mosses, and fungi. D. In this biome you could find a black spruce. E. This biome would be most likely to have a black oak.