Biology (biodiversity) Question?

Question

Simple organic molecules, such as amino acids and nucleotides:

a. could not have developed in early Earth environments because of the oxygen in the atmosphere.
b. can only be made by living organisms
c. can be synthesized abiotically from simple inorganic molecules.
d. are not necessary for life.

thank you!

Answer 1

C. Simple organic molecules can be assembled purely randomly, without the presence of living things. This was shown to be possible in the Miller-Urey experiments, where water, methane, ammonia and hydrogen where mixed together in a flask, and heated. Electrodes were sparked to simulate lightning. Afterwards, it was found that the inorganic molecules had rearranged to form organic amino acids and the building blocks for nucleotides.

Answer 2

c) is correct

a) is wrong because the early environment on earth did not have oxygen ( a premis of the questions) and in fact simple amino acids etc. have been made under early earthlike conditions.
b) these compunds can be easily synthesized in the lab chemically
d) these are the main ingredients for the proteins and DNA molecules that make up living organisms

Answer 3

C.
There is nothing magical about organic molecules. It is chemistry like any other.