Where are ribosomes found inside a cell?
A. Golgi apparatus
B. cytosol
C. rough endoplasmic reticulum
D. both in the cytosol and the rough
endoplasmic reticulum
Answer Key: D
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One would expect most strict anaerobic organisms to have superoxide dismutase
Indicate whether this statement is true or false.
During the preparation of a human genomic library, plasmids containing human DNA fragments are inserted into:a
compatible human cells. b. an antibiotic-resistant strain of E. coli to protect the inserted fragments. c. antibiotic-sensitive E. coli cells that become antibiotic-resistant if transformed. d. bacteriophages. e. mRNA molecules.
When a species invades a new habitat and evolves rapidly into several new species to better exploit new resources, what has occurred?
A) Polyploidy B) Adaptive radiation C) Hybridization D) Genetic divergence E) Extinction
Some viral diseases require only one vaccination, which lasts for years. For other diseases like the flu, vaccinations last only one season. The flu vaccine lasts such a short time because the flu virus
A. is more easily transmitted B. mutates much more rapidly C. is less dangerous D. is much smaller