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Q1. Comparisons of amino acid sequences can shed light on evolutionary divergence of related species. Would you expect all the proteins of given set of living species to demonstrate the same degree of divergence? Why or why not?
Q2. A student, who has not learned properly how to prepare solutions, added 25.7 g of sucrose to exactly 150.0 mL of dH2O and assumed that a 0.5 M solution had been prepared. The total solution volume increased to 168.0 ml after sucrose was dissolved and the solution was thoroughly mixed.
Find out the actual concentration of the sucrose solution prepared by the student.
Write down 500- to 750-word response explaining five major structures of brain and each structure's function(s) in human body. Ensure to comprise the following brain structures.
A lacI+ lacO+ lacZ+ lacY+ Hfr strain is mated with an F- lacI- lacO+ lacZ- lacY- strain. In the absence of any inducer in the medium, beta-galactosidase is made for a short time after the lac region has been transferred. Explain why it is made and..
How long would it take one starting Ecoli cell growing at a constant generation time (g) =20 mins (With a growth rate, k, of 3 hours) to generate an aggregate cell mass equal to the mass of the earth? Assume no nutrient limitation or growth inhibi..
In maize the genes Pl for purple leaves (dominant over green leaves); sm for salmon silk ( recessive for yellow silk) and py for pigmy plant (recessive to normal size) are on chromosome 6 at positions 45, 55 and 65 respectively. Predict the propor..
In August 2001, a man walking his dog in Lindley Woods, near Otley, in West Yorkshire, discovered the body of 16-year old Leanne Tiernan, buried in a shallow grave.
Explain why some drugs used to treat type 1 diabetes are compounds that diffuse into the cell and activate tyrosine kinases. Why might they not be as effective in the treatment of type 2 diabetes?
Which of the following are the Crown Groups of flowering plants? Mark all that apply.
What progeny would result from crossing a pure-bred rose combed hen with dihybrid walnut rooster? Give the genotypes of the parents and the genotpye and phenotypes of the F1.
Fill in the below table to demonstrate a cross between an individual homozygous dominant for brown eyes and a heterozygous individual.
What parts of the autonomic nervous system control heart rate and what effect does each have on it. What parts of the heart contract as the wave passes them and in what order.
In a co-evolved predator-prey relationship, does predation rate operate under directional selective pressure or stabilizing selective pressure?
Outline why a diet containing a high proportion of unsaturated fat may decrease the risk of developing cardiovascular disease. What other dietary changes can contribute to a reduced risk of cardiovascular disease?
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