A gain-of-function mutation in which of the following would have the same effect as a gain-of-function mutation in Ras?

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#Question id: 2119

#Unit 2. Cellular Organization

A sodium-potassium pump:

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#Question id: 2120

#Unit 2. Cellular Organization

Which one of the following statements about membranes is true?

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#Question id: 2121

#Unit 2. Cellular Organization

Which of the following membrane activities requires energy from ATP hydrolysis?

TLS Online TPP Program

#Question id: 2122

#Unit 2. Cellular Organization

The inner (plasma) membrane of E. coli is about 75% lipid and 25% protein by weight.  How many molecules of membrane lipid are there for each molecule of protein?  (Assume that the average protein is Mr 50,000 and the average lipid is 750.)

TLS Online TPP Program

#Question id: 2123

#Unit 2. Cellular Organization

Which of these statements about the composition of membranes is true?

TLS Online TPP Program

#Question id: 2124

#Unit 2. Cellular Organization

An integral membrane protein can be extracted with: