Meteorites from space
A) carried cyanobacteria that provided Earth's first oxygen.
B) carried retroviruses from which DNA molecules have been synthesized in the lab.
C) show no chemical evidence of water on Mars.
D) contain purines, pyrimidines, sugars, and ten amino acids.
E) carried amino acids that were all l-amino acids, the predominant form found in Earth organisms.

Question

Quizplus · Accepted Answer

Many meteorites contain complex organic molecules including purines, pyrimidines, sugars, and ten amino acids. These are the building blocks of life and suggest that meteorites may have played a role in the origin of life on Earth.

Meteorites from Space