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Q1. An efficient DNA probe can sometimes be developed by knowing the amino acid sequence of the protein encoded by the gene. A student argued that this is too time-consuming as the complete amino acid sequence must be determined in order to create the probe. Does the student have a valid argument? Why or why not give details?
Q2. Both endocrine and nervous system are major regulating system of the body; but nervous system has been compared to an airmail delivery system and the endocrine to pony express. Briefly explain the comparison.
Why is it that a carrot plant can express a bacterial gene?
The global community is plagued by increasing incidence of lung cancer, colorectal cancer, breast and pancreatic cancers, prostate cancer, leukemia, non-Hodgkin lymphoma, liver, ovarian and esophageal cancers.
A batch animal cell culture has a productivity of 1.8 g/L*day, with a MUmax=0.5 days, a 10% inoculums and a turnaround time of 5 hours. If a continuous culture could operate at a dilution rate of 90% MUmax, explain what would be the productivity.
Explain why does inhibiting the Na/K transport pump in neurons will not have an instant effect on membrane potential. Over time the membrane potential will depolarize.
These experiments demonstrated that DNA is the genetic material of phage and that protein does not transmit genetic information. Can this same experiment be carried out with 35S and 14C? Describe it.
Assume you are given an isolated muscle with its motor nerve intact. The preparation permits you to make electrophysiological measurements from the nerve
To determine which protein or proteins, A, B, C, or D, are responsible for the activation of DNA synthesis, you construct mutant versions of the PDGF receptor that retain one or more tyrosine phosphorylation sites.
How did the zoological research of the comparative anatomist J.Z. Young in the 1930's along with the Donnan effect and the Nernst and Goldman equations pave the way for the electrophysiological discoveries of Hodgkin and Huxley relating to voltage..
Do different methods of classification all suggest the same phylogenetic history?
Explain in simple terms how each nephron acts as a tiny blood filter as it produces urine. Where do most waste products from the blood end up? Where do most essential items of the blood end up? How do filtration, reabsorption, and secretion affect th..
Yellow tomatoes with a pear shape bring high price per basket to growers. Pear shape, yellow color, and terminal flower position are recessive traits produced through alleles, f, r, and t, respectively.
Why are phytoplankton populations so low in certain parts of the ocean, even though there appears to be plenty of sunlight and nutrients?
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