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?
A) How can amino acids, simple sugars, and nucleotides be synthesized abiotically?
B) How can RNA molecules catalyze reactions?
C) How did RNA sequences come to carry the code for amino acid sequences?
D) How could polymers involving lipids and/or proteins form membranes in aqueous environments?
E) How can RNA molecules act as templates for the synthesis of complementary RNA molecules?
Steps involved in in vitro fertilization.
Cells involved in nonspecific immunity in vertebrates.
Metabolic pathways involved in gluconeogenesis.
Surface molecules involved in the interaction between an antigen-presenting cell and a CD4+ T cell.
A Hypothesis Can Lead to a Scientific Consensus
Doing Qualitative Research: Designs, Methods, and Techniques