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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 - T Zoology

  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: 9599

#XL - Q Biochemistry

The primary donor of PSI, P700, is a dimer of chlorophyll a molecules, in primary donor chlorophyll, additional chlorophylls molecules such as
TLS Online TPP Program

#Question id: 15168

#XL - S Microbiology

Cyanobacteria comprises a large and morphologically heterogenous group of
TLS Online TPP Program

#Question id: 27292

#XL - U Food Technology

Which of the following glycosidic linkage found in maltose?
TLS Online TPP Program

#Question id: 11758

#XL - T Zoology

In normal kidneys, which of the following is true of the osmolarity of renal tubular fluid that flows through the early distal tubule in the region of the macula densa?
TLS Online TPP Program

#Question id: 12584

#XL - R Botany

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