Most of the organisms that normally inhabit our skin help defend us against infection. Indicate whether the statement is true or false
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The Xist gene product
A. is never translated into protein. B. is required for the production of Barr bodies. C. coats the X chromosome with RNA. D. associates with proteins to compact the chromosome. E. All of these statements are correct.
Potential energy is the energy of motion
1.True 2.False
Water that is filtered out of the blood by the kidneys is returned to the body through the action of aquaporins. Which of the following statements about water balance disorders is scientifically accurate?
A) People with heart failure often swell due to too much water from excess numbers of aquaporins. B) Water retention (too much water) in pregnancy can be due to a decreased number of aquaporins. C) Kidney failure and decreased urine production are due to increased numbers of aquaporins. D) Small amounts of urine are produced by people who inherit a defect in the ability to make aquaporins.
Sanger sequencing is based on the order in which ddNTPs are added to a growing polynucleotide. Why are ddNTPs integral to the Sanger sequencing method?
A) They have a 2? hydroxyl that allows for extension of the polynucleotide. B) They do not have a 2? hydroxyl, which does not allow the extension of the polynucleotide. C) They do not have a 3? hydroxyl, which does not allow the extension of the polynucleotide. D) They have a 3? hydroxyl that allows for extension of the polynucleotide.