In developing embryos such as a chicken, what restores the amount of surface area needed for exchange requirements?
A. catabolism
B. respiration
C. anabolism
D. cell division
E. assimilation
Answer: D
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With the E. coli trp operon where both repression and attenuation occur, the extent of regulation achieved by repression is ________ the extent of regulation achieved by attenuation.
A. greater than B. less than C. the same as D. Repression is not used in the regulation of the E. coli trp operon.
The most widely used molecule in sequence-based evolutionary analyses are ________ genes
A) ATPase B) electron transport C) SSU rRNA D) tRNA
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Figure 39.10A, B, and C
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The following question refers to the figure above.
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A villus is indicated by the letter ____.
A. A B. B C. C D. D E. E
Which genetically modified organism has not been developed by genetic engineers (at least, not yet)?
A) transgenic rice with genes for milk proteins B) transgenic salmon with a growth hormone gene that allows them to grow more quickly C) transgenic corn with the gene for human insulin D) transgenic pigs with a roundworm gene that allows them to make more omega-3 fatty acids