15 substances are actually produced. New techniques of molecular
biology, however, provide a way to answer these questions.获得更多gre考试咨询点击进入免费咨询顾问或联系QQ客服:800004500
It is possible to make specific complementary
DNAs that can serve as molecular
probes to seek out the messenger RNAs
20 of the peptide hormones. The brain cells
containing these mRNAs can then be isolated and their
mRNAs decoded to determine just what their protein
products are and how closely the products resemble
the true peptide hormones.
11. Which of the following titles best summarizes the passage?
Is Molecular Biology the Key to Understanding Intercellular Communication in the Brain?
Molecular Biology: Can Researchers Exploit Its Techniques to Synthesize Peptide Hormones?
The Advantages and Disadvantages of the Immunological Approach to Detecting Peptide Hormones
Peptide Hormones: How Scientists Are Attempting to Solve Problems of Their Detection
Peptide Hormones: The Role Played by Messenger RNAs in Their Detection
12. The passage suggests that a substance detected in the brain by use of antiserums to peptide hormones may
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