Which of the following radioisotopes could be used to accurately date a fossil that is thought to be over 750 million years old?
A. uranium 238
B. carbon 14
C. uranium 235
D. uranium 235 or uranium 238
E. carbon 14 or uranium 235
A
Biology & Microbiology
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Family, twin, and adoption studies have revealed a(n) _____________________ component to mental illnesses, such as bipolar disorder
Fill in the blank(s) with correct word
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Acetyl is used during
A. the Krebs cycle. B. the electron transport system. C. glycolysis. D. fermentation.
Biology & Microbiology
Based on the animation, what is transferred during bacterial conjugation?
a. RNA b. A conjugation pilus c. A bacterial plasmid d. A bacterial chromosome
Biology & Microbiology
Although autoantibodies to nucleic acids are characteristics of (HIV/RA/SLE), many other autoantibodies are produced
What will be an ideal response?
Biology & Microbiology