TLS Online TPP Program

#Question id: 2961


What is the best evidence that anaphase chromosomes are not pulled to the poles like fish on a line?

#SCPH01 Biochemistry
  1. Dyneins and kinesin-related proteins are associated with kinetochores.

  2. Depolymerization of spindle microtubules occurs at the kinetochores.

  3. Microtubule disassembly establishes the rate of chromosomal movement.

  4. In fact, it is believed that chromosomes are pulled in like fish on a line.

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TLS Online TPP Program

#Question id: 4168

#SCPH01 Biochemistry

The deaminoacylated tRNA leaves the ribosome as the growing polypeptide passes through the tunnel of the large ribosomal subunit from the __.

TLS Online TPP Program

#Question id: 13066

#SCPH28 | Zoology

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.
Which of the following is a codominant marker?

TLS Online TPP Program

#Question id: 1296

#SCPH06 I Botany

People with a defect in the synthesis of the integrin β2 subunit exhibit reduced:

TLS Online TPP Program

#Question id: 17272

#SCPH01 Biochemistry

We need to minimum buffering capacity is required so that the pH value of the samples analyzed does not have any influence on the system, 
What would happen if we used the higher buffering concentration
a) more electric power is applied, resulting in higher heat development. 
b) less electric power for less time  is applied, resulting in very high  heat development
c) higher buffering concentration need more electric power resulting increases in the temperature will increase the mobility and rate of migration of ions.
d) using the higher buffering concentration shows no affect at all

TLS Online TPP Program

#Question id: 5561

#I Life Science/ Life Sciences Group – I-V

In sea urchins, the "fast block" and the longer lasting "slow block" to polyspermy, respectively, are ________.