Which of the following statements describes integral membrane proteins? a) they are easily removed by changes in ph or high salt b) the proteins tend to be water-soluble c) amino acids that contact the fatty acid carbon chains of the membrane are hydrophobic d) they interact with the membrane via a lipid anchor e) none of the above

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: