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TLS Online TPP Program

#Question id: 7154

Cancer is believed to often arise from stem cells, rather than fully differentiated cells. Which of the following are consistent with this view?

#Unit 4. Cell Communication and Cell Signaling
  1. Stem cells are actively dividing and express few differentiated functions, so they may have fewer changes to undergo than do fully differentiated cells in becoming cancer cells.
  2. DNA replication is necessary for mutations to occur, and stem cells are replicating their DNA whereas differentiated cells are for the most part not replicating their DNA.
  3. Teratocarcinomas are tumors that arise from germ cells or embryonic stem (ES) cells, under certain circumstances, demonstrating that tumors can arise from stem cells without further mutation.
  4. All of the above are reasons that cancer cells may more readily arise from stem cells than from fully differentiated cells.
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TLS Online TPP Program

#Question id: 14504

#Unit 13. Methods in Biology

If the probability of a defective bolt is 0.1, the mean and standard deviation for the distribution of defective bolts in a total of 500 are
TLS Online TPP Program

#Question id: 14505

#Unit 13. Methods in Biology

Two cards are drawn with replacement from a well shuffled deck of 52 cards. The mean and standard deviation for the number of aces are

Probability distribution table
TLS Online TPP Program

#Question id: 14506

#Unit 13. Methods in Biology

In a Binomial distribution, the mean and standard deviation are 12 and 2 respectively. The values of n and p are respectively.
TLS Online TPP Program

#Question id: 14507

#Unit 13. Methods in Biology

For a biased die the probabilities for different faces to turn up are given below.
The die is tossed and you are told that either face 1 or face 2 has turned up. The probability that it is face 1 is
TLS Online TPP Program

#Question id: 14508

#Unit 13. Methods in Biology

There are three events A, B and C, one of which must occur and only one can happen, the odds are 8 to 3 against A, 5 to 2 against B; find the probability of C.
TLS Online TPP Program

#Question id: 14509

#Unit 13. Methods in Biology

Aishwarya studies either computer science or mathematics everyday. If she studies computer science on a day, then the probability that she studies mathematics the next day is 0.6. If she studies mathematics on a day, then the probability that she studies computer science the next day is 0.4. Given that Aishwarya studies computer science on Monday, what is the probability that she studies computer science on Wednesday ?