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TLS Online TPP Program

#Question id: 4952

Several scientific laboratories across the globe are involved in research concerning the origin of life on Earth. Which of these questions is currently the most problematic and would have the greatest impact on our understanding if we were able to answer it?

#XL - S Microbiology

  1. How can amino acids, simple sugars, and nucleotides be synthesized abiotically?

  2. How can RNA molecules catalyze reactions?

  3. How did RNA sequences come to carry the code for amino acid sequences?

  4. How could polymers involving lipids and/or proteins form membranes in aqueous environments?

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TLS Online TPP Program

#Question id: 9567

#XL - T Zoology

Which part of the electromagnetic spectrum is the photosynthetically active region?
TLS Online TPP Program

#Question id: 5249

#XL - S Microbiology

What is the best explanation for why Bernard Davis didn't observe generalized transduction in his U tube experiments?
TLS Online TPP Program

#Question id: 19649

#XL - P Chemistry

Which of the following can be used as the halide component of a Friedel craft reaction?
TLS Online TPP Program

#Question id: 5597

#XL - T Zoology

Mammalian sperm will migrate against the direction of the flow—using CatSper calcium channels (like sea urchin sperm) to sense calcium influx and monitor the direction of the current, this process is known as:
TLS Online TPP Program

#Question id: 15342

#XL - S Microbiology

The heavy chain is then expressed on the cell surface in combination with the surrogate light chain, which is made up of_______________, together they form the pre-B-cell receptor,