Prion protein is a normal constituent of brain tissue in all mammals which of the following statements are correct regarding prion protein

a) Strains of mice lacking the gene for PrP suffer no obvious ill effect

b) Illness occurs only when the normal cellular PRP or prpc occurs in an altered confirmation called PrPsc

c) The interaction of prpsc with the prpc converts the letter to prpsc initiating a Domino effect in which more and more the brain proteins converted to the disease causing form

d) the structure of prpsc is very different with much of the structure converted to amyloid like Alpha sheet.

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#Question id: 7513

#General Aptitude

A boat travels upstream from Q to P and downstream from p to Q in 3 h. If the distance between P to Q is 4 km and the speed of the current is 1 km/h , then what is the speed of the boat in still water?

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#Question id: 7514

#General Aptitude

A train running at 8/11 of its own speed reached a place in 11/2 h. How much time could be saved, if the train would have run at its own speed?

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#Question id: 7515

#General Aptitude

Starting from his one day, a student walks at a speed of 3 Km/h and reaches his school 5 min late. Next day he increases his speed by 1 Km/h and reaches the school 3 min early. How far is the school from his house?

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#Question id: 7516

#General Aptitude

Excluding stoppages, the speed of a bus is 24 km/h and including stoppages, it is 20 km/h. For how many minutes does the bus stop per hour?

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#Question id: 7517

#General Aptitude

Two cyclists start from the same place in opposite directions. One goes towards North at 12 km/h and the other goes towards South at 15 km/h. What time will they take to be 8.1 km apart?

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#Question id: 7518

#General Aptitude

In a flight of 800 km, an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/h and the time of flight increased by 20 min. The duration of the flight is