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Question: The CAP activator protein and the Lac repressor both control the Lac operon (see the figure below). You construct cells that are mutant in the gene coding for the Lac repressor so that these cells lack the Lac repressor under all conditions. For these mutant cells, state whether the Lac operon will be switched on or off in the following situations, and explain why.
Describe why people confined to wheelchairs as of paralyzed lower limbs have thin, weak bones in their thighs and legs.
Madagascar, Indonesia and the Amazon basin have some of the greatest numbers of different species concentrated in a single area. What kinds of environments do you think encourage greater biodiversity.
The bases in this "glyceronucleic acid" are symbolized as B, D, H, and U. The monomers are linked during phospodiester bonds and the bases form hydrogen bonds between the strands according to the following rules; for every B, there are twice as many ..
define a well-controlled experiment to determine if the rise in internal free calcium observed in the cytoplasm of unfertilized sea urchin eggs in the presence of A23187 is due to in flux of calcium from seawater. Include experimental treatments, ..
Calculations must be made assuming that the minimum significant number has four significant digits. If all of phosphorus in a 3.00 gram sample of MgNH4PO4 is extracted and used to make a diphosphorus pentaoxide, what mass of P2O5 could be produced.
It is a very curcial concept to understand how the immune response is mounted against viruses, bacteria, protozoans and helminthes. For an effective immune response, both innate and adaptive immunity should work together.
Find out both the allelic frequencies and the genotypic frequencies. A 68-year-old client was admitted to the hospital medical floor with a diagnosis of chronic bronchitis. His wife asks the nurse why his skin looks blue. How would you describe cyano..
After a few minutes, the light should begin to look brighter. Even as this is the case, add a card and see if you can still see light. Repeat this process of gradually adding cards over a 15-minute period. Were you able to detect an increasingly dim ..
Assume you had supply of nucleotides made with atoms that were twice as heavy as normal, and you permitted some cells to replicate their dna once, using only heavy nucleotides.
Speculate on and/or research potential mechanisms which would afford the improved processing. Speculate on and/or research potential mechanisms.
A reaction has been developed to be carried out in the 5 ml total volume. It need a final glycine concentration of 20 µM. If the protocol enables 200µl for glycine addition, state the amount of the concentration would you make up the stock solutio..
Describe the four tissue types, nervous, muscle, epithelial, connective. How did tissues and multicellular animals evolve? How do animals develop.
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