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Question: Liposomes are promising molecules in gene transfer technology because of their similarity to cell membranes and their charge interactions with negatively charged DNA. Estimate the charge on the outside surface of a liposome of diameter 1 um. Suppose a typical phospholipid head has a diameter of 1 nm and carries a charge of one proton (1.6021 x 10^-19 C). Assume that the surface of the spherical liposome is comprised of phospholipid heads packed together as tightly as possible in a configuration known as hexagonal packing, which minimizes the inevitable vacant space that occurs when circles pack against one another.
Determine the realitive risk and odds ratios for a child's diagnosis of ADHD relative to exposure to lead paint, stratified by the father's diagnosis with and without ADHD.
Avery, McLeod and McCarthy set out to uncover Griffith's transforming principle: in other words what is it about heat killed smooth, pathogenic Streptococcus pneumoniae that makes rough, avirulent S
Create the pedigree that demonstrate the familial relationships described in the paragraph above. Use a circle to denote a woman, a square to denote a man and a filled symbol to demonstrate individuals.
Discuss and explain how you would calculate delta G for the reaction: glucose+6O2---> 6CO2+6H2O. If you were told that this reaction is highly exergonic.
What error did the new receptionist make that resuled in the insurance company refusing to pay for the hip x-rays describeyour answer
Would you expect any differences in the sizes of the inserts in the two libraries? in brief explain.
Biochemistry-michaelis menten eqn problem
A beaker with 100 of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100. A student adds 6.60 of a 0.350 solution to the beaker. How much will the pH change? The of a..
Albinism is a rare genetically inherited trait that is only in phenotype of homozygous recessive individuals. The most characteristic symptom is a marked deficiency in the skin and hair pigment melanin.
Why is the immune system so highly conserved, as other physiological systems are more specially adapted to our mammalian ancestry or hominid roots.
Propose how you may consume the recommended number of serving from each group in the future. Describe what a very low urea clearance indicates for this patient.
Your favorite patient has just had surgery. After surgery, Bactroban was applied. After a few days, you notice an infection around incision. Even though more bactroban is applied, the infection persists.
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