The most common method of asexual reproduction in protists is ________.
A. cytokinesis
B. fission
C. fragmentation
D. budding
Answer: B
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Birds are most closely related to
A. crocodiles. B. snakes. C. mammals. D. non-avian dinosaurs. E. amphibians.
You decide to repeat the Meselson-Stahl experiment, except this time you plan to grow the E. coli cells on light 14N medium for many generations and then transfer them to heavy 15N medium and allow them to grow for 2 additional generations (2 rounds of DNA replication). If the conservative model of DNA replication was correct, what is the expected distribution of DNA in the density gradient after two rounds of replication?
A. one band of light density and one band of intermediate density B. one band of intermediate density C. one band of heavy density D. one band of light density E. one band of light density and one band of heavy density
Lysosomal proteins are marked by adding a phosphate to a _______ group.
a. glucose b. serine c. GDP d. mannose
The symbiotic relationship with fungi called mycorrhizae
A. allows plants to take up minerals such as phosphorus. B. existed only millions of years ago. C. only benefits the fungus. D. causes disease in the infected plant.