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1) A mutation that changes an alanine residue in the interior of a protein to valine is found to lead a loss of activity. However, activity is regained when a second mutation at different position changes an isoleucine residue to glycine. How might this second mutation lead to restoration of activity?
2) Identify the functional groups in side chain of a protein that can form hydrogen bonds or electrostatic interactions with a side chain of arginine within the same protein with pH of 7.0.
Ordinary table salt is sodium chloride. What is baking soda?
Why might a brightly colored dewlap on an Anolis lizard be a reliable signal of male quality?
Eukaryotes, one complete set of nuclear chromosomes Note that Eukaryotes also possess a mitochondrial genome thus plants have a chloroplast genome and a mitochondrial genome What about fungi? What is the source of those organellar genomes.
Explain the events that occur when epinephrine binds to a G-protein coupled receptor in the membrane of a cell. Begin with the binding of the epinephrine and end with the activation of adenylyl cyclase.
Digestion of the oligonucleotide, AGUACAA, by pancreatic RNase would yield what products. make a restriction map for this plasmid.
In the F2 generation, how many genotypic classes could be generated from dihybride cross of two F1 heterozygous in which the gene show complete dominance.(PLEASE EXPLAIN)
A bacteriophage contains a single stranded DNA molecule. This DNA contains 19% adenine, 23% thymine, 45% guanine, and 13 percent cytosine. An RNA molecule complementary to this DNA is made.
How many cups of the coffee would you have to drink to reach the dose (10mM) needed to interfere along with the DNA replication checkpoint mechanism?
The picture below shows xylem and phloem tissue in a stem. Arrows show the direction of movement of water (gray arrows) and sugar (black arrows). Using your knowledge of water potential,
express the role of double helix in complimentary base pairing in DNA replication.
Discuss and explain necessary and important feature of RNA polymerases is their ability to target promoters in order to initiate transcription efficiently and properly.
Explain why water forms nearly spherical droplets on the surface of a freshly waxed car. Why doesn't water bead on a clean windshield?
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