Assume that a drop of water is spherical and its diameter is onetenth of a cm. A conical glass has a height equal to the diameter of its rim. If 32000 drops of water fill the glass completely, then the height of the glass (in cm.) is

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#Question id: 14994

#Unit 4. Cell Communication and Cell Signaling

The absence of MHC class I, which is expressed by almost all normal cells, but is specifically down-regulated by some tumors and in response to some viral infections, it will undergo apoptosis by

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#Question id: 2250

#Unit 2. Cellular Organization

Which of the following is true about cystic fibrosis?

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#Question id: 3966

#Unit 3. Fundamental Processes

You are studying a mutant protein that has a half-life of several weeks. The normal, wild-type version has a half-life of only a few minutes. What feature would you look for to account for the difference in half-life of your mutant compared to the wild-type?

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#Question id: 15843

#Unit 8. Inheritance Biology

You have isolated two temperature-sensitive mutations in phage l that you suspect may be in the same gene. These phage mutants are called ts-1 and ts-2. Each mutant will form plaques at 35˚C but not at 42˚C. You cross ts-1 to ts-2 phage by coinfecting E. coli at the permissive temperature of 35˚C. When the resulting phage lysate is plated at 35˚C you count 10,000 plaques per ml of phage lysate, but when the same phage lysate is plated at 42˚C, there are only 80 plaques per ml.           What is the distance between the ts-1 and ts-2 mutations in m.u.?

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#Question id: 958

#Unit 1. Molecules and their Interaction Relevant to Biology

Phenylketonuria (PKU) is a disease caused by a defect in ________ formation.