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TLS Online TPP Program

#Question id: 664

Which is evidence that structures for proteins determined by X-ray crystallography represent the structures in solution?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. Their similarity to structures determined by NMR.

  2. The protein crystals are soluble in water.

  3. The proteins must align in a regular pattern to form a crystal.

  4. Only one conformation is ever possible for a protein so it is irrelevant whether the protein is in a crystal or in solution.

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TLS Online TPP Program

#Question id: 14482

#Unit 13. Methods in Biology

In a horse race the odds in favour of four horses H1, H2, H3, H4 are 1 : 3, 1 : 4, 1 : 5; 1 : 6 respectively not more than one wins at a time. Then the chance that one of them wins is
TLS Online TPP Program

#Question id: 14483

#Unit 13. Methods in Biology

In a garden 40% of the flowers are roses and the rest are carnations. If 25% of the roses and 10% of the carnations are red, the probability that a red flower selected at random is a rose.
TLS Online TPP Program

#Question id: 14484

#Unit 13. Methods in Biology

Find the chance of throwing more than 15 in one throw with 3 dice
TLS Online TPP Program

#Question id: 14485

#Unit 13. Methods in Biology

In a race where 12 horses are running, the chance that horse A will win is 1/6, that B will win is 1/10 and that C will win is 1/8. Assuming that a dead heat is impossible the chance that one of them will win
TLS Online TPP Program

#Question id: 14486

#Unit 13. Methods in Biology

There are two bags, one of which contains 5 red and 7 white balls and the other 3 red and 12 white balls. A ball is to be drawn from one or other of the two bags, find the chance of drawing a red ball.
TLS Online TPP Program

#Question id: 15008

#Unit 8. Inheritance Biology

You have a white eyed, male fruit fly with vestigial wings and a wild type female known to be heterozygous for both traits. You know that vestigial is located on an autosome. What is the probability that a mating between these two flies will generate a female offspring with vestigial wings and white eyes?