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TLS Online TPP Program

#Question id: 5845

Which of the following statements is false?  In vitro, the strand-exchange reaction:

#Unit 8. Inheritance Biology

  1. can include formation of a Holliday intermediate.

  2. is accompanied by ATP hydrolysis.

  3. may involve transient formation of a three- or four-stranded DNA complex.

  4. requires DNA polymerase.

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TLS Online TPP Program

#Question id: 27505

#Unit 2. Cellular Organization

Which of the amino acid residue are found in active site of topoisomerases
TLS Online TPP Program

#Question id: 634

#Unit 1. Molecules and their Interaction Relevant to Biology

An enzyme has a Vmax of 50 micromol product formed (minute x mg protein)-1 and a Km of 10 microM for the substrate. When a reaction mixture contains the enzyme and 5 microM substrate, which of the following percentages of the maximum velocity will be closest to the initial reaction rate?
TLS Online TPP Program

#Question id: 675

#Unit 1. Molecules and their Interaction Relevant to Biology

Which statement is not true about an α-helix?
TLS Online TPP Program

#Question id: 16791

#Unit 13. Methods in Biology

The mode of a distribution is 24 and the mean is 60. What is its median? 
TLS Online TPP Program

#Question id: 10960

#Unit 7. System Physiology – Animal

Why do some malnourished patients bleed excessively when injured?