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At a beuty salon one might request a "permanent" to alter the shape of ones hair which is chiefly composed of fibrous proteins known as keratins. to increase the waves or curls in one's hair, the beatician treats your hair with a reducing agent ( eg ammonium thioglycolate) uses rollers to reshap the hair, and then treats the hair with an oxidizing agent ( eg dilute hydrogen peroxide) a) what do you suppose is the chemical basis of a " permanent"? b) over time ( weeks) as your hair grows the : permanent" waves or curl in your hair is gradually lost. why?
A couple, George and Lara, have three sons. The oldest and youngest are normal but the middle child has xeroderma pigmentosum.
In ward's Ap biology lab 7 (the drosophila lab) describe the parental cross you received; use genetic symbols. Depict a punnett square to show how the possible allelic combinations for this gene in the F1 generation.
A male volunteer named Conan was passively sensitized with IgE specific for Der f 1. After an intradermal challenge with Der f 1, Conan show a typical skin lesion due to an immediate hypersensitivity reaction.
How many times more hydroxide ions are there in a sloution with a pH of 9 then in a solution with a pH of 3.
If C-1 of glucose is radioactively labeled & then enters glycolysis, which carbon of G-3-P will be labeled? Determine what fraction of the molecules will carry radioactive label?
How are bacterial nucleoid and plasmid similar? Check all that apply. -bound by proteins. -in a specific region of the cell. - mostly consist of essential genes. - supercoiled. - single. - doublestranded. - circular. - similar in size.
you have purified DNA from you recently deceased goldfish. Which of the following restriction nucleases would you use if you wanted to end up with DNA fragments with an average size of 70 kilobase pairs (kb) after complete digestion of the DNA? Th..
Medical history elicits the facts that she lost her husband six months previously, has been extremely depressed, and is taking sleeping pills and not eating properly. What would doctor hypothesize about the probability of senile dementia in this case..
Develop two degenerate primer sequences that will amplify the entire Open reading frame of the corresponding gene in a PCR reaction.
Many scientists were reluctant to accept the results of Avery, MacLeod, and McCarty's experiments showing that DNA (rather than protein) was the transforming principle. Why?
Aquatic leaf at 10 percent salt solution under the microscope. The next question ask me to reverse the procedure by adding 1-2 drops of DI water.
XYY humans are fertile males. XXX humans are fertile females. What do these observations reveal about the mechanisms of sex determination and dosage compensation?
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