A complex consisting of a single mRNA molecule with several ribosomes is called a ________.
A. multisome
B. polysome
C. maxisome
D. complexisome
Answer: B
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Which of the following statements about the mouse is FALSE?
a. Its scientific name is Mus musculus. b. Females give birth to offspring about three weeks after mating. c. It has been used to disprove the "inheritance of acquired characters" hypothesis. d. Knockout mice are those that carry a lethal allele. e. Knockout mice are those that have a gene that is completely nonfunctional.
How did Meselson and Stahl rule out the conservative model of DNA replication using equilibrium density gradient centrifugation?
What will be an ideal response?
Which cause of habitat destruction is fastest-growing and most destructive?
A. Conversion to agriculture B. Urbanization C. Mining and quarrying D. Dams E. Deforestation F. Draining wetlands
If the embryos of a mating do not develop properly and die, thus preventing the offspring of two different species from continuing to reproduce, they are an example of
A. behavioral isolating mechanisms. B. mechanical isolating mechanisms. C. biochemical isolating mechanisms. D. hybrid inviability.