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TLS Online TPP Program

#Question id: 1022

Why are we concerned at all with monitoring emerging/reemerging diseases?

#SCPH28 | Zoology

  1. These represent growing threats to human health that will require new scientific research and resources to effectively combat.

  2. Because globalization (greater trade and travel between countries) leads to more chances for spread of illnesses into new areas and populations. Monitoring these illnesses will help us to protect people.

  3. Because the speed of travel has increased greatly. With increased speed of travel, it is far more likely that a serious pathogenic threat from one area of the world can spread rapidly across the globe in a very fast manner. We need to monitor the occurrence of these illnesses to try to protect populations.

  4. All of the above.

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TLS Online TPP Program

#Question id: 18862

#SCPH01 Biochemistry

What is the shortest distance that the eye must go to concentrate on any object?
TLS Online TPP Program

#Question id: 2301

#SCPH01 Biochemistry

Microtubules are involved in the.
TLS Online TPP Program

#Question id: 10507

#SCPH05 I Biotechnology

Rhizobacteria function as

 a) Nitrogen fixation

 b) depositing pathogens directly into the vascular system,

 c) producing antibiotics and antifungal agents for inhibiting soil pathogens

 d) herbivore sensors by sending electrical or chemical signals to surrounding cells

 Which one of the following combination is correct?
TLS Online TPP Program

#Question id: 2065

#SCPH05 I Biotechnology

Which of the following are least likely to diffuse through the phospholipid bilayer of a cell membrane?
TLS Online TPP Program

#Question id: 13054

#SCPH05 I Biotechnology

Precision will be reduced, but yield will be increased
Optimisation of a PCR reaction is often a compromise between the competing demands for precision, efficiency and yield. Although the specific effects may vary, generally, increasing the annealing temperature will increase non-specific primer binding and reduce precision. Increasing the length of the elongation phase will reduce the proportion of incomplete newly-synthesised strands and therefore increase yield. In this case, the potential effect on efficiency is unclear. Increasing the elongation phase would increase the reaction time, but the time taken to ramp down to a lower annealing temperature would be reduced.
What would the expected effect be on a PCR reaction if the primers used were slightly shorter and more variable than the intended oligonucleotide sequences?