The person who performed an experiment that proved that amino acids could be produced in the laboratory from a reducing atmosphere and electrical sparks was

A. Stanley Miller.
B. Graham Cairns-Smith.
C. Thomas Cech.
D. Aleksander Oparin.
E. Sidney Fox.


Ans: A. Stanley Miller.

Biology & Microbiology

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A scientist studying evolution of peppered moths (Biston betularia) in Michigan observed that the percentage of melanic moths increased by around 2% from 1960-1961. Has evolution occurred in this population?  

A.  No, because melanism wasn't adaptive at that time. B.  No, because the frequency of the melanic moths did not change enough to be considered evolution. C.  Yes, because the frequency of the melanic moths in the population changed over time. D.  Yes, because the frequency of melanic moths decreased.

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Recall that the muscles of marine mammals contain a great deal of ____ . Oxygen binds to the one heme site in this molecule, and can be "stored" in muscles until it is required by cells during a dive

Fill in the blank with the appropriate word.

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_____ is an example of reproductive cloning

a. Somatic cell nuclear transfer (SCNT) b. Multiple offspring from the same pregnancy c. Artificial embryo splitting d. [Somatic cell nuclear transfer (SCNT)] and [Artificial embryo splitting] e. All of these

Biology & Microbiology