Reference no: EM13768553
Question 1
The evidence that life on Earth is extremely old comes from
fossil algae in rocks more than 3 billion years old
fossils buried thousands of feet below the surface
fossil algae in rocks a few million years old
the discovery of silicon based life forms in ancient rocks
the discovery of silicon based life forms in a Miller - Urey experiment
Question 2
When Urey and Miller completed their experiment they found ___ in their mixture.
DNA
RNA
amino acids
ATP
Question 3
These unicellular organisms do not contain a nucleus.
DNA
eukaryotes
prokaryotes
protenoic
Question 4
________ proposed the existence of canali on Mars.
Einstein
Galileo
Copernicus
Schiaparelli
Question 5
The __________ is a range of wavelengths between 18cm and 21cm.
atmospheric window
SETI
waterhole
panspermia
Question 6
If we sent a signal to an exoplanet suspected to have intelligent life, if the exoplanet is 200 light-years away, how long would it take to receive a message from the exoplanet assuming intelligent beings received the signal and sent one back right away?
200 years
100 years
300 years
400 years
600 years
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