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TLS Online TPP Program

#Question id: 20303

Which of the following correctly represents the physiological effect of adrenalin?

#Unit 7. System Physiology – Animal
  1. Inhibition of the heart rate. 
  2. Decrease the blood pressure. 
  3. stimulation of the heart rate. 
  4. Peripheral vasoconstriction
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TLS Online TPP Program

#Question id: 11506

#Unit 9. Diversity of Life Forms

A biologist discovers a new unicellullar organism that possesses more than two flagella and two small, but equal-sized, nuclei. The organism has reduced

mitochondria (mitosomes), no chloroplasts, and is anaerobic. To which clade does this organism probably belong?
TLS Online TPP Program

#Question id: 13057

#Unit 13. Methods in Biology

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.
How primer concentration leads to decrease in PCR efficiency?
TLS Online TPP Program

#Question id: 27570

#Unit 1. Molecules and their Interaction Relevant to Biology

Some of the following's statement is made regarding the Van der Waals interaction

a. Van der Waals interaction is the weakest of all intermolecular attractions between molecules.

b. The van der Waals interaction primarily depends on interatomic distance.

c. Fundamental Behind VWI is DIPOLE 

d. Fundamental Behind VWI is orbital overlapping

Choose which of the above is incorrect
TLS Online TPP Program

#Question id: 2223

#Unit 2. Cellular Organization

Five dialysis bags, constructed of a type of membrane that is permeable to water and impermeable to sucrose, were filled with various concentrations of sucrose and then placed in separate beakers containing an initial concentration of 0.6 M sucrose solution. At 10-minute intervals, the bags were massed (weighed), and the percent change in mass of each bag was graphed.

 Which line in the graph represents the bag that contained a solution isotonic to the 0.6 M solution at the beginning of the experiment?
TLS Online TPP Program

#Question id: 31236

#Unit 2. Cellular Organization

Centromeres associated cohesins are specifically protected by protein phosphatase 2A (PP2A). Protein phosphatase 2A (PP2A) is recruited to centromeric regions in human cells from G2 through metaphase by a member of a family of PP2A targeting factors known as: