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TLS Online TPP Program

#Question id: 858

Unfolded protein response (UPR)

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. Bring the various systems into alignment by increasing the concentration of chaperones in the ER

  2. Decreasing the rate of overall protein synthesis.

  3. Both A and B

  4. Only A

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TLS Online TPP Program

#Question id: 16493

#Unit 3. Fundamental Processes

35S promoter sequences derived from cauliflower mosaic virus shows which type of expression.
TLS Online TPP Program

#Question id: 15676

#Unit 2. Cellular Organization

The dairy industry also sometimes uses ultrahigh-temperature (UHT) sterilization. Milk and milk products are heated at
TLS Online TPP Program

#Question id: 7574

#General Aptitude

A train can travel 50% faster than a car. Both start from point A at the same time and reach point B 75 kms away from A at the same time. On the way, however, the train lost about 12.5 minutes while stopping at the stations. The speed of the car is:
TLS Online TPP Program

#Question id: 12584

#Unit 10. Ecological Principles

Which of the following causes excessively high levels of toxic chemicals in fish-eating birds? 
TLS Online TPP Program

#Question id: 15814

#Unit 8. Inheritance Biology

You and your lab partner have isolated 20 new mutant yeast strains that are defective in synthesis of threonine, an amino acid. These Thr- mutants do not grow on minimal medium, but they do grow on minimal medium supplemented with threonine. Ten of your Thr- mutants (numbered 1 through 10) were isolated in a strain of mating type a (MAT a). The other 10 Thr mutants (numbered 11 through 20) were isolated in a strain of mating type α (MAT α). You and your lab partner cross each of the MAT a strains to each of the MAT α strains, and you include crosses to the appropriate wild-type strains. Your experimental observations are shown in the table below, where (-) indicates diploids that did not grow on minimal medium and (+) indicates diploids that did grow on minimal medium.

Which mutations are recessive?