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How is it possible for a change in a single amino acid in a protein of 1000 amino acids to destroy its function, even when that amino acid is far away from any binding site?
Explain the slow and fast ways proteins are regulated.
In the DNA of certain bacterial cells, 13% of the nucleotides are adenine. What are the percentages of the other nucleotides?How many chromosomes are in haploid cells? Diploid cells?The DNA in all the cells in our body adds up to about 100 TRILLION total meters of DNA. The sun is 150 billion meters from earth. So the DNA in our bodies could travel from the earth to the sun and back over 300 times. How does all this DNA fit in our cells and in our bodies? How is it organized? Explain how histone charge is critical for chromatin formation.Eukaryotes and prokaryotes handle their RNA differently. Is this advantageous for eukaryotes? How? Is it also a disadvantage? (5' cap, PolyA Tail, introns/exons, separation of transcription and translation spatially, advantage: splicing creates different functional proteins, disadvantage: introns make eukaryotic genomes very large, longer to replicate, bacteria can replicate in 20 minutes, human cells replicate in about a day)
The delta G for hydrolysis of the amide group from glutamine is -14.2 kJ/mol at 25C. Compute the keq' for this hydrolysis.
An activity of the 1000 Bq of a class-W aerosol (AMAD = 1 micrometer) is inhaled in the single intake:In accordance with the ICRP-30 model for respiratory system state the initial activity deposited in the compartment e.
What substance is known as the "spreading factor?" How does the "spreading factor" aid an organism in its quest to penetrate the host cell? What is the dissimilarity between net primary production and net primary productivity.
Mycoplasmas are the smallest living cells. They are spherical and have a diameter of about 0.33 μm (radius of mycoplasmas = 0.165 μm)a.
Describe b riefly the role of HOX genes in brain development. If a twenty-five year old woman using Accutane to treat acne discovers that she is pregnant, what concerns do you have for the embryo/fetus?
define a metabolic pathway from any organism (baterium, plant, animal) that peroxidase is involved.
how data were collected during a study of the catalytic.
A neutral variant of feather color in snow geese, called blue phase is caused through an unknown genetic variant. The less common blue phase results from a single dominant gene while common white phase is homozygous recessive.
What technique below is often used to identify transmembrane segments of integral proteins? What kind of enzyme removes a phosphate groups from a substrate for the purpose of activating or deactivating them?
Discuss how many ways can these chromosomes be assorted into gametes and how many different chromosome combinations are possible when crossing two unrelated flies?
In an interview the subject explain that despite regularly drinking so much alcohol, he was able to function well enough to hold down a demanding job.
The HIV virion is a sphere that is roughly 140 nm in diameter. Determine hat particular kind of microscope is needed to visualize HIV virion
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