Discoveries by ____ led other scientists to reconsider the possibility that life most likely arose near hydrothermal vents on the sea floor.
A. Miller and urey
B. Orgel and crick
C. Starr
D. Watson and crick
E. Ballard
Answer: E. Ballard
Biology & Microbiology
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Which element's isotope is commonly used to determine when biological samples such as fossils, were formed?
A. oxygen B. hydrogen C. carbon D. nitrogen E. sulfur
Biology & Microbiology
Adjacent nucleotides on a strand of DNA are connected to each other by a(n) ____
a. hydrophobic interaction b. phosphodiester bond c. hydrogen bond d. peptide bond e. ionic bond
Biology & Microbiology
It took more than 100,000 years for the human
population to grow to one billion individuals and took about ____ years to add five billion more. a. 200 b. 20,000 c. 100,000 d. 200,000 e. 500,000
Biology & Microbiology
Temperature
What will be an ideal response?
Biology & Microbiology