Why can a person who is unable to produce insulin be successfully treated with insulin derived from genetically modified bacteria?
A. Bacterial insulin is similar enough to human insulin to serve the same purpose.
B. Typical bacterial insulin is exactly the same as human insulin.
C. The insulin-producing gene of bacteria was altered to have the same base sequence as the human counterpart and now produces the human version of insulin.
D. The gene that produces insulin in humans was inserted into the bacteria where it continues to produce human insulin.
Answer: D
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Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
What will be an ideal response?
Four of the five answers are traits that Homo sapiens had compared to earlier species. Select the exception
a. smaller teeth and facial bones. b. a more prominent chin. c. a higher and rounder skull. d. the capacity for spoken language. e. shorter body form.
The vertical dive of a moth for cover when it hears the ultrasound chirps of an approaching bat is an example of a(n)
A. sign stimulus. B. innate releasing mechanism. C. kinesis. D. supernormal stimulus. E. fixed action pattern.
In an analysis of independent contrast, researchers found that fetuses had faster growth rates in polyandrous than in monogamous species of primates. How did the researchers interpret the results?
a. Fetuses develop faster to "make room" for offspring from a different male. b. Extracting more resources from the mother maximizes offspring's inclusive fitness in polyan-drous species. c. Fast fetal growth rates are always optimal. d. Fetal growth rates represent phylogenetic constraints and are unrelated to mating system.